Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/test.proto

Index: tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/test.proto
diff --git a/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/test.proto b/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/test.proto
deleted file mode 100644
index 438e1e6b0307fd40f127376513220b9ef843bc09..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/test.proto
+++ /dev/null
@@ -1,27 +0,0 @@
-/* !/usr/bin/env python
- *
- * Copyright 2011 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package a.b.c;
-
-import "abc.def";
-import "from/here";
-
-message MyMessage {
-  required int64 thing = 1 [a="b"];
-  optional group whatever = 2 {
-    repeated int64 thing = 1;
-  }
-}