Remove proto2 check from generator
diff --git a/src/google/protobuf/compiler/csharp/csharp_source_generator_base.cc b/src/google/protobuf/compiler/csharp/csharp_source_generator_base.cc
index 68209cc..ee7502f 100644
--- a/src/google/protobuf/compiler/csharp/csharp_source_generator_base.cc
+++ b/src/google/protobuf/compiler/csharp/csharp_source_generator_base.cc
@@ -59,7 +59,7 @@
 }
 
 std::string SourceGeneratorBase::class_access_level() {
-  return (IsDescriptorProto(descriptor_) || this->options()->internal_access) ? "internal" : "public";
+  return this->options()->internal_access ? "internal" : "public";
 }
 
 const Options* SourceGeneratorBase::options() {