all: change module to google.golang.org/protobuf

Temporarily remove go.mod, since we can't generate an accurate one until
the corresponding v1 change is submitted.

Change-Id: I1e1ad97f2b455e33f61ffaeb8676289795e47e72
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/177000
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
diff --git a/cmd/protoc-gen-go/testdata/proto2/enum.pb.go b/cmd/protoc-gen-go/testdata/proto2/enum.pb.go
index c9b935f..d66a422 100644
--- a/cmd/protoc-gen-go/testdata/proto2/enum.pb.go
+++ b/cmd/protoc-gen-go/testdata/proto2/enum.pb.go
@@ -4,10 +4,10 @@
 package proto2
 
 import (
-	protoreflect "github.com/golang/protobuf/v2/reflect/protoreflect"
-	protoregistry "github.com/golang/protobuf/v2/reflect/protoregistry"
-	protoiface "github.com/golang/protobuf/v2/runtime/protoiface"
-	protoimpl "github.com/golang/protobuf/v2/runtime/protoimpl"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoregistry "google.golang.org/protobuf/reflect/protoregistry"
+	protoiface "google.golang.org/protobuf/runtime/protoiface"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	sync "sync"
 )
 
@@ -464,11 +464,11 @@
 	0x63, 0x61, 0x74, 0x65, 0x31, 0x10, 0x01, 0x12, 0x0e, 0x0a, 0x0a, 0x64, 0x75, 0x70, 0x6c, 0x69,
 	0x63, 0x61, 0x74, 0x65, 0x32, 0x10, 0x01, 0x1a, 0x02, 0x10, 0x01, 0x22, 0x04, 0x08, 0x02, 0x10,
 	0x02, 0x22, 0x04, 0x08, 0x03, 0x10, 0x03, 0x2a, 0x09, 0x52, 0x45, 0x53, 0x45, 0x52, 0x56, 0x45,
-	0x44, 0x31, 0x2a, 0x09, 0x52, 0x45, 0x53, 0x45, 0x52, 0x56, 0x45, 0x44, 0x32, 0x42, 0x41, 0x5a,
-	0x3f, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c, 0x61,
-	0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x76, 0x32, 0x2f, 0x63,
-	0x6d, 0x64, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x67, 0x6f,
-	0x2f, 0x74, 0x65, 0x73, 0x74, 0x64, 0x61, 0x74, 0x61, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x32,
+	0x44, 0x31, 0x2a, 0x09, 0x52, 0x45, 0x53, 0x45, 0x52, 0x56, 0x45, 0x44, 0x32, 0x42, 0x3e, 0x5a,
+	0x3c, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f,
+	0x72, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x63, 0x6d, 0x64, 0x2f,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x2d, 0x67, 0x65, 0x6e, 0x2d, 0x67, 0x6f, 0x2f, 0x74, 0x65,
+	0x73, 0x74, 0x64, 0x61, 0x74, 0x61, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x32,
 }
 
 var (