diff --git a/extensions/hibernate-orm/deployment/src/main/java/io/quarkus/hibernate/orm/deployment/HibernateOrmProcessor.java b/extensions/hibernate-orm/deployment/src/main/java/io/quarkus/hibernate/orm/deployment/HibernateOrmProcessor.java
index 437affa4ef351..5cb67fbc21182 100644
--- a/extensions/hibernate-orm/deployment/src/main/java/io/quarkus/hibernate/orm/deployment/HibernateOrmProcessor.java
+++ b/extensions/hibernate-orm/deployment/src/main/java/io/quarkus/hibernate/orm/deployment/HibernateOrmProcessor.java
@@ -734,7 +734,7 @@ public void build(HibernateOrmRecorder recorder, HibernateOrmConfig hibernateOrm
                 .scope(Singleton.class)
                 .unremovable()
                 .supplier(recorder.jpaConfigSupportSupplier(
-                        new JPAConfigSupport(persistenceUnitNames, entityPersistenceUnitMapping)))
+                        new JPAConfigSupport(persistenceUnitNames)))
                 .done());
     }
 
diff --git a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfig.java b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfig.java
index 1b5fa1d0d75ae..705d5ec3c0465 100644
--- a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfig.java
+++ b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfig.java
@@ -1,7 +1,6 @@
 package io.quarkus.hibernate.orm.runtime;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
@@ -26,13 +25,10 @@ public class JPAConfig {
 
     private static final Logger LOGGER = Logger.getLogger(JPAConfig.class.getName());
 
-    private final Map<String, Set<String>> entityPersistenceUnitMapping;
-
     private final Map<String, LazyPersistenceUnit> persistenceUnits;
 
     @Inject
     public JPAConfig(JPAConfigSupport jpaConfigSupport) {
-        this.entityPersistenceUnitMapping = Collections.unmodifiableMap(jpaConfigSupport.entityPersistenceUnitMapping);
 
         Map<String, LazyPersistenceUnit> persistenceUnitsBuilder = new HashMap<>();
         for (String persistenceUnitName : jpaConfigSupport.persistenceUnitNames) {
@@ -101,13 +97,6 @@ public Set<String> getPersistenceUnits() {
         return persistenceUnits.keySet();
     }
 
-    /**
-     * Returns the set of persistence units an entity is attached to.
-     */
-    public Set<String> getPersistenceUnitsForEntity(String entityClass) {
-        return entityPersistenceUnitMapping.getOrDefault(entityClass, Collections.emptySet());
-    }
-
     /**
      * Need to shutdown all instances of Hibernate ORM before the actual destroy event,
      * as it might need to use the datasources during shutdown.
diff --git a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfigSupport.java b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfigSupport.java
index b0a04a21a1f46..453ddc7c58052 100644
--- a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfigSupport.java
+++ b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/JPAConfigSupport.java
@@ -1,19 +1,15 @@
 package io.quarkus.hibernate.orm.runtime;
 
-import java.util.Map;
 import java.util.Set;
 
 public class JPAConfigSupport {
 
     public Set<String> persistenceUnitNames;
-    public Map<String, Set<String>> entityPersistenceUnitMapping;
 
     public JPAConfigSupport() {
     }
 
-    public JPAConfigSupport(Set<String> persistenceUnitNames,
-            Map<String, Set<String>> entityPersistenceUnitMapping) {
+    public JPAConfigSupport(Set<String> persistenceUnitNames) {
         this.persistenceUnitNames = persistenceUnitNames;
-        this.entityPersistenceUnitMapping = entityPersistenceUnitMapping;
     }
 }