Remove entry script for unversioned virtualenv

The code for this is already gone, so remove the entry script too.

BUG=None
TEST=None

Change-Id: Ic45c1d3e7838ff8b2de5c190d8bd10afe9619487
Reviewed-on: https://chromium-review.googlesource.com/798119
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Shuqian Zhao <shuqianz@chromium.org>
diff --git a/create_venv b/create_venv
deleted file mode 100755
index 13abe9f..0000000
--- a/create_venv
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/bin/bash
-# Copyright 2017 The Chromium OS Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-#
-# Create or update a virtualenv.
-#
-# $ create_venv path/to/venv path/to/requirements.txt
-#
-# See the cros_venv Python package for details, or pass the --help
-# option.
-set -eu
-basedir=$(readlink -f "$(dirname "${BASH_SOURCE[0]}" )")
-PYTHONPATH="$basedir/venv" /usr/bin/python -m cros_venv "$@"