Remove python bindings unittests from the build.

mojo/tools/run_mojo_python_bindings_tests.py

+#!/usr/bin/env python
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import os
+import sys
+
+_script_dir = os.path.dirname(os.path.abspath(__file__))
+sys.path.insert(0, os.path.join(_script_dir, "pylib"))
+
+from mojo_python_tests_runner import MojoPythonTestRunner
+
+
+class PythonBindingsTestRunner(MojoPythonTestRunner):
+
+  def add_custom_commandline_options(self, parser):
+    parser.add_argument('--build_dir', action='store',
+                        help='path to the build output directory')
+
+  def apply_customization(self, args):
+    if args.build_dir:
+      python_build_dir = os.path.join(args.build_dir, 'python')
+      if python_build_dir not in sys.path:
+        sys.path.append(python_build_dir)
+
+
+def main():
+  runner = PythonBindingsTestRunner(os.path.join('mojo', 'python', 'tests'))
+  sys.exit(runner.run())
+
+
+if __name__ == '__main__':
+  sys.exit(main())