Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/pyprotobuf.g

Index: tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/pyprotobuf.g
diff --git a/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/pyprotobuf.g b/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/pyprotobuf.g
deleted file mode 100644
index 534e1f8aa85916e9b93621b18c06d79ed0200915..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/gsutil/third_party/protorpc/protorpc/experimental/parser/pyprotobuf.g
+++ /dev/null
@@ -1,45 +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.
- */
-
-grammar pyprotobuf;
-
-options {
-//  language=Python;
-	output = AST;
-	ASTLabelType = CommonTree;
-}
-
-import protobuf_lexer, protobuf;
-
-// For reasons I do not understand the HIDDEN elements from the imported
-// with their channel intact.
-
-COMMENT
-    :   '//' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;}
-    |   '/*' ( options {greedy=false;} : . )* '*/' {$channel=HIDDEN;}
-    ;
-
-WS  :   ( ' '
-        | '\t'
-        | '\r'
-        | '\n'
-        ) {$channel=HIDDEN;}
-    ;
-
-py_proto_file
-	: proto_file EOF^
-	;