Revert "Add gsutil 4.13 to telemetry/third_party"

tools/telemetry/third_party/gsutil/third_party/apitools/apitools/base/py/buffered_stream.py

Index: tools/telemetry/third_party/gsutil/third_party/apitools/apitools/base/py/buffered_stream.py
diff --git a/tools/telemetry/third_party/gsutil/third_party/apitools/apitools/base/py/buffered_stream.py b/tools/telemetry/third_party/gsutil/third_party/apitools/apitools/base/py/buffered_stream.py
deleted file mode 100644
index bda7e65c1fbaca7a142c84803fce6e9eb0a2d091..0000000000000000000000000000000000000000
--- a/tools/telemetry/third_party/gsutil/third_party/apitools/apitools/base/py/buffered_stream.py
+++ /dev/null
@@ -1,59 +0,0 @@
-#!/usr/bin/env python
-"""Small helper class to provide a small slice of a stream.
-
-This class reads ahead to detect if we are at the end of the stream.
-"""
-
-from apitools.base.py import exceptions
-
-
-# TODO(user): Consider replacing this with a StringIO.
-class BufferedStream(object):
-
-    """Buffers a stream, reading ahead to determine if we're at the end."""
-
-    def __init__(self, stream, start, size):
-        self.__stream = stream
-        self.__start_pos = start
-        self.__buffer_pos = 0
-        self.__buffered_data = self.__stream.read(size)
-        self.__stream_at_end = len(self.__buffered_data) < size
-        self.__end_pos = self.__start_pos + len(self.__buffered_data)
-
-    def __str__(self):
-        return ('Buffered stream %s from position %s-%s with %s '
-                'bytes remaining' % (self.__stream, self.__start_pos,
-                                     self.__end_pos, self._bytes_remaining))
-
-    def __len__(self):
-        return len(self.__buffered_data)
-
-    @property
-    def stream_exhausted(self):
-        return self.__stream_at_end
-
-    @property
-    def stream_end_position(self):
-        return self.__end_pos
-
-    @property
-    def _bytes_remaining(self):
-        return len(self.__buffered_data) - self.__buffer_pos
-
-    def read(self, size=None):  # pylint: disable=invalid-name
-        """Reads from the buffer."""
-        if size is None or size < 0:
-            raise exceptions.NotYetImplementedError(
-                'Illegal read of size %s requested on BufferedStream. '
-                'Wrapped stream %s is at position %s-%s, '
-                '%s bytes remaining.' %
-                (size, self.__stream, self.__start_pos, self.__end_pos,
-                 self._bytes_remaining))
-
-        data = ''
-        if self._bytes_remaining:
-            size = min(size, self._bytes_remaining)
-            data = self.__buffered_data[
-                self.__buffer_pos:self.__buffer_pos + size]
-            self.__buffer_pos += size
-        return data