diff --git a/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp b/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
index 6867fefbcae..e59f786ce66 100644
--- a/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
+++ b/barretenberg/cpp/src/barretenberg/dsl/acir_format/serde/acir.hpp
@@ -712,43 +712,9 @@ struct BrilligOutputs {
     static BrilligOutputs bincodeDeserialize(std::vector<uint8_t>);
 };
 
-struct ForeignCallParam {
-
-    struct Single {
-        Circuit::Value value;
-
-        friend bool operator==(const Single&, const Single&);
-        std::vector<uint8_t> bincodeSerialize() const;
-        static Single bincodeDeserialize(std::vector<uint8_t>);
-    };
-
-    struct Array {
-        std::vector<Circuit::Value> value;
-
-        friend bool operator==(const Array&, const Array&);
-        std::vector<uint8_t> bincodeSerialize() const;
-        static Array bincodeDeserialize(std::vector<uint8_t>);
-    };
-
-    std::variant<Single, Array> value;
-
-    friend bool operator==(const ForeignCallParam&, const ForeignCallParam&);
-    std::vector<uint8_t> bincodeSerialize() const;
-    static ForeignCallParam bincodeDeserialize(std::vector<uint8_t>);
-};
-
-struct ForeignCallResult {
-    std::vector<Circuit::ForeignCallParam> values;
-
-    friend bool operator==(const ForeignCallResult&, const ForeignCallResult&);
-    std::vector<uint8_t> bincodeSerialize() const;
-    static ForeignCallResult bincodeDeserialize(std::vector<uint8_t>);
-};
-
 struct Brillig {
     std::vector<Circuit::BrilligInputs> inputs;
     std::vector<Circuit::BrilligOutputs> outputs;
-    std::vector<Circuit::ForeignCallResult> foreign_call_results;
     std::vector<Circuit::BrilligOpcode> bytecode;
     std::optional<Circuit::Expression> predicate;
 
@@ -3253,9 +3219,6 @@ inline bool operator==(const Brillig& lhs, const Brillig& rhs)
     if (!(lhs.outputs == rhs.outputs)) {
         return false;
     }
-    if (!(lhs.foreign_call_results == rhs.foreign_call_results)) {
-        return false;
-    }
     if (!(lhs.bytecode == rhs.bytecode)) {
         return false;
     }
@@ -3291,7 +3254,6 @@ void serde::Serializable<Circuit::Brillig>::serialize(const Circuit::Brillig& ob
     serializer.increase_container_depth();
     serde::Serializable<decltype(obj.inputs)>::serialize(obj.inputs, serializer);
     serde::Serializable<decltype(obj.outputs)>::serialize(obj.outputs, serializer);
-    serde::Serializable<decltype(obj.foreign_call_results)>::serialize(obj.foreign_call_results, serializer);
     serde::Serializable<decltype(obj.bytecode)>::serialize(obj.bytecode, serializer);
     serde::Serializable<decltype(obj.predicate)>::serialize(obj.predicate, serializer);
     serializer.decrease_container_depth();
@@ -3305,7 +3267,6 @@ Circuit::Brillig serde::Deserializable<Circuit::Brillig>::deserialize(Deserializ
     Circuit::Brillig obj;
     obj.inputs = serde::Deserializable<decltype(obj.inputs)>::deserialize(deserializer);
     obj.outputs = serde::Deserializable<decltype(obj.outputs)>::deserialize(deserializer);
-    obj.foreign_call_results = serde::Deserializable<decltype(obj.foreign_call_results)>::deserialize(deserializer);
     obj.bytecode = serde::Deserializable<decltype(obj.bytecode)>::deserialize(deserializer);
     obj.predicate = serde::Deserializable<decltype(obj.predicate)>::deserialize(deserializer);
     deserializer.decrease_container_depth();
@@ -4758,200 +4719,6 @@ Circuit::Expression serde::Deserializable<Circuit::Expression>::deserialize(Dese
 
 namespace Circuit {
 
-inline bool operator==(const ForeignCallParam& lhs, const ForeignCallParam& rhs)
-{
-    if (!(lhs.value == rhs.value)) {
-        return false;
-    }
-    return true;
-}
-
-inline std::vector<uint8_t> ForeignCallParam::bincodeSerialize() const
-{
-    auto serializer = serde::BincodeSerializer();
-    serde::Serializable<ForeignCallParam>::serialize(*this, serializer);
-    return std::move(serializer).bytes();
-}
-
-inline ForeignCallParam ForeignCallParam::bincodeDeserialize(std::vector<uint8_t> input)
-{
-    auto deserializer = serde::BincodeDeserializer(input);
-    auto value = serde::Deserializable<ForeignCallParam>::deserialize(deserializer);
-    if (deserializer.get_buffer_offset() < input.size()) {
-        throw_or_abort("Some input bytes were not read");
-    }
-    return value;
-}
-
-} // end of namespace Circuit
-
-template <>
-template <typename Serializer>
-void serde::Serializable<Circuit::ForeignCallParam>::serialize(const Circuit::ForeignCallParam& obj,
-                                                               Serializer& serializer)
-{
-    serializer.increase_container_depth();
-    serde::Serializable<decltype(obj.value)>::serialize(obj.value, serializer);
-    serializer.decrease_container_depth();
-}
-
-template <>
-template <typename Deserializer>
-Circuit::ForeignCallParam serde::Deserializable<Circuit::ForeignCallParam>::deserialize(Deserializer& deserializer)
-{
-    deserializer.increase_container_depth();
-    Circuit::ForeignCallParam obj;
-    obj.value = serde::Deserializable<decltype(obj.value)>::deserialize(deserializer);
-    deserializer.decrease_container_depth();
-    return obj;
-}
-
-namespace Circuit {
-
-inline bool operator==(const ForeignCallParam::Single& lhs, const ForeignCallParam::Single& rhs)
-{
-    if (!(lhs.value == rhs.value)) {
-        return false;
-    }
-    return true;
-}
-
-inline std::vector<uint8_t> ForeignCallParam::Single::bincodeSerialize() const
-{
-    auto serializer = serde::BincodeSerializer();
-    serde::Serializable<ForeignCallParam::Single>::serialize(*this, serializer);
-    return std::move(serializer).bytes();
-}
-
-inline ForeignCallParam::Single ForeignCallParam::Single::bincodeDeserialize(std::vector<uint8_t> input)
-{
-    auto deserializer = serde::BincodeDeserializer(input);
-    auto value = serde::Deserializable<ForeignCallParam::Single>::deserialize(deserializer);
-    if (deserializer.get_buffer_offset() < input.size()) {
-        throw_or_abort("Some input bytes were not read");
-    }
-    return value;
-}
-
-} // end of namespace Circuit
-
-template <>
-template <typename Serializer>
-void serde::Serializable<Circuit::ForeignCallParam::Single>::serialize(const Circuit::ForeignCallParam::Single& obj,
-                                                                       Serializer& serializer)
-{
-    serde::Serializable<decltype(obj.value)>::serialize(obj.value, serializer);
-}
-
-template <>
-template <typename Deserializer>
-Circuit::ForeignCallParam::Single serde::Deserializable<Circuit::ForeignCallParam::Single>::deserialize(
-    Deserializer& deserializer)
-{
-    Circuit::ForeignCallParam::Single obj;
-    obj.value = serde::Deserializable<decltype(obj.value)>::deserialize(deserializer);
-    return obj;
-}
-
-namespace Circuit {
-
-inline bool operator==(const ForeignCallParam::Array& lhs, const ForeignCallParam::Array& rhs)
-{
-    if (!(lhs.value == rhs.value)) {
-        return false;
-    }
-    return true;
-}
-
-inline std::vector<uint8_t> ForeignCallParam::Array::bincodeSerialize() const
-{
-    auto serializer = serde::BincodeSerializer();
-    serde::Serializable<ForeignCallParam::Array>::serialize(*this, serializer);
-    return std::move(serializer).bytes();
-}
-
-inline ForeignCallParam::Array ForeignCallParam::Array::bincodeDeserialize(std::vector<uint8_t> input)
-{
-    auto deserializer = serde::BincodeDeserializer(input);
-    auto value = serde::Deserializable<ForeignCallParam::Array>::deserialize(deserializer);
-    if (deserializer.get_buffer_offset() < input.size()) {
-        throw_or_abort("Some input bytes were not read");
-    }
-    return value;
-}
-
-} // end of namespace Circuit
-
-template <>
-template <typename Serializer>
-void serde::Serializable<Circuit::ForeignCallParam::Array>::serialize(const Circuit::ForeignCallParam::Array& obj,
-                                                                      Serializer& serializer)
-{
-    serde::Serializable<decltype(obj.value)>::serialize(obj.value, serializer);
-}
-
-template <>
-template <typename Deserializer>
-Circuit::ForeignCallParam::Array serde::Deserializable<Circuit::ForeignCallParam::Array>::deserialize(
-    Deserializer& deserializer)
-{
-    Circuit::ForeignCallParam::Array obj;
-    obj.value = serde::Deserializable<decltype(obj.value)>::deserialize(deserializer);
-    return obj;
-}
-
-namespace Circuit {
-
-inline bool operator==(const ForeignCallResult& lhs, const ForeignCallResult& rhs)
-{
-    if (!(lhs.values == rhs.values)) {
-        return false;
-    }
-    return true;
-}
-
-inline std::vector<uint8_t> ForeignCallResult::bincodeSerialize() const
-{
-    auto serializer = serde::BincodeSerializer();
-    serde::Serializable<ForeignCallResult>::serialize(*this, serializer);
-    return std::move(serializer).bytes();
-}
-
-inline ForeignCallResult ForeignCallResult::bincodeDeserialize(std::vector<uint8_t> input)
-{
-    auto deserializer = serde::BincodeDeserializer(input);
-    auto value = serde::Deserializable<ForeignCallResult>::deserialize(deserializer);
-    if (deserializer.get_buffer_offset() < input.size()) {
-        throw_or_abort("Some input bytes were not read");
-    }
-    return value;
-}
-
-} // end of namespace Circuit
-
-template <>
-template <typename Serializer>
-void serde::Serializable<Circuit::ForeignCallResult>::serialize(const Circuit::ForeignCallResult& obj,
-                                                                Serializer& serializer)
-{
-    serializer.increase_container_depth();
-    serde::Serializable<decltype(obj.values)>::serialize(obj.values, serializer);
-    serializer.decrease_container_depth();
-}
-
-template <>
-template <typename Deserializer>
-Circuit::ForeignCallResult serde::Deserializable<Circuit::ForeignCallResult>::deserialize(Deserializer& deserializer)
-{
-    deserializer.increase_container_depth();
-    Circuit::ForeignCallResult obj;
-    obj.values = serde::Deserializable<decltype(obj.values)>::deserialize(deserializer);
-    deserializer.decrease_container_depth();
-    return obj;
-}
-
-namespace Circuit {
-
 inline bool operator==(const FunctionInput& lhs, const FunctionInput& rhs)
 {
     if (!(lhs.witness == rhs.witness)) {
@@ -6115,4 +5882,4 @@ Circuit::Witness serde::Deserializable<Circuit::Witness>::deserialize(Deserializ
     obj.value = serde::Deserializable<decltype(obj.value)>::deserialize(deserializer);
     deserializer.decrease_container_depth();
     return obj;
-}
\ No newline at end of file
+}