remove ExplicitConversionFromClientResultVisitor

Author: christothes

codegen/generator/src/OpenAILibraryGenerator.cs

@@ -33,7 +33,6 @@ protected override void Configure()
             AddVisitor(new OpenAILibraryVisitor());
             AddVisitor(new VirtualMessageCreationVisitor());
             AddVisitor(new ProhibitedNamespaceVisitor());
-            AddVisitor(new ExplicitConversionFromClientResultVisitor());
             AddVisitor(new ImplicitConversionToBinaryContentVisitor());
             AddVisitor(new ModelSerializationVisitor());
             AddVisitor(new ExperimentalAttributeVisitor());