duplicate binding info fix (#1180)

src/DotNetWorker.Grpc/FunctionMetadata/DefaultFunctionMetadataProvider.cs

@@ -60,12 +60,6 @@ namespace Microsoft.Azure.Functions.Worker
                     foreach (var binding in rawBindings.EnumerateArray())
                     {
                         functionMetadata.RawBindings.Add(binding.GetRawText());
-
-                        BindingInfo bindingInfo = FunctionMetadataRpcExtensions.CreateBindingInfo(binding);
-
-                        binding.TryGetProperty("name", out JsonElement jsonName);
-
-                        functionMetadata.Bindings.Add(jsonName.ToString(), bindingInfo);
                     }
 
                     functionMetadataResults.Add(functionMetadata);

src/DotNetWorker.Grpc/GrpcWorker.cs

@@ -261,7 +261,8 @@ namespace Microsoft.Azure.Functions.Worker
                         _ => BuildRpc(func),
                     };
 
-                    // add BindingInfo
+                    // add BindingInfo here instead of in the providers  
+                    // because we need access to gRPC types in proto-file and source-gen won't have access
                     rpcFuncMetadata.Bindings.Add(func.GetBindingInfoList());
 
                     response.FunctionMetadataResults.Add(rpcFuncMetadata);