Remove obsolete files.

mod_for_test_scripts/750enableExternalExtensions

Index: mod_for_test_scripts/750enableExternalExtensions
diff --git a/mod_for_test_scripts/750enableExternalExtensions b/mod_for_test_scripts/750enableExternalExtensions
deleted file mode 100755
index 9d3b33827e230d85153c64a7a81f86f8a39d240e..0000000000000000000000000000000000000000
--- a/mod_for_test_scripts/750enableExternalExtensions
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-# Copyright (c) 2010 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 a symlink to external_extensions.json to allow autotests
-# to launch a packaged extension at login.
-
-echo "Creating external_extensions.json symlink"
-LINK_TARGET="/home/autotest/tests/external_extensions.json"
-EXT_DIR="${ROOT_FS_DIR}/opt/google/chrome/extensions"
-FILE="${EXT_DIR}/external_extensions.json"
-mkdir -p $EXT_DIR
-ln -sf $LINK_TARGET $FILE