[#2090] Remove finalFieldsWritable from reflection producer

The method had been deprecated and was finally removed in quarkusio/quarkus@4557b4a.

Author: michelkaeser

integration/quarkus-3/deployment/src/main/java/com/blazebit/persistence/integration/quarkus/deployment/BlazePersistenceProcessor.java

@@ -256,7 +256,6 @@ void reflection(EntityViewsBuildItem entityViewsBuildItem,
                     .constructors(true)
                     .fields(true)
                     .methods(true)
-                    .finalFieldsWritable(true)
                     .build()
             );
             // For static metamodel classes, we only need the fields