diff --git a/test/mocks.h b/test/mocks.h
index 117b058a..6fb27cf8 100644
--- a/test/mocks.h
+++ b/test/mocks.h
@@ -83,41 +83,6 @@ struct MockLogger : public Logger {
   }
 };
 
-// `Journal` is an implementation of `Logger` that appends logged records to an
-// internal `vector`, `records`.
-struct Journal : public Logger {
-  struct Record {
-    LogLevel level;
-    uint64_t trace_id;  // zero if absent
-    uint64_t span_id;   // zero if absent
-    std::string message;
-  };
-
-  mutable std::vector<Record> records;
-
-  Journal() : Logger([](LogLevel, ot::string_view) {}) {}
-  void Log(LogLevel level, ot::string_view message) const noexcept override {
-    records.push_back(Record{level, 0, 0, message});
-  }
-  void Log(LogLevel level, uint64_t trace_id, ot::string_view message) const noexcept override {
-    records.push_back(Record{level, trace_id, 0, message});
-  }
-  void Log(LogLevel level, uint64_t trace_id, uint64_t span_id, ot::string_view message) const
-      noexcept override {
-    records.push_back(Record{level, trace_id, span_id, message});
-  }
-  void Trace(ot::string_view message) const noexcept override {
-    records.push_back(Record{LogLevel::debug, 0, 0, message});
-  }
-  void Trace(uint64_t trace_id, ot::string_view message) const noexcept override {
-    records.push_back(Record{LogLevel::debug, trace_id, 0, message});
-  }
-  void Trace(uint64_t trace_id, uint64_t span_id, ot::string_view message) const
-      noexcept override {
-    records.push_back(Record{LogLevel::debug, trace_id, span_id, message});
-  }
-};
-
 // Exists just so we can see that opts was set correctly.
 struct MockTracer : public Tracer {
   TracerOptions opts;