Remove vim headers

Second round to remove all vim headers. We don't need to have the
vim headers in each source files.

More discussions:
http://lists.openstack.org/pipermail/openstack-dev/2013-October/017353.html

Change-Id: I43703e2289212389c7841f44691ae7849ed1f505
Closes-Bug: #1229324

keystone/tests/fixtures/__init__.py

@@ -1,5 +1,3 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
 # 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

keystone/tests/fixtures/cache.py

@@ -1,5 +1,3 @@
-# vim: tabstop=4 shiftwidth=4 softtabstop=4
-
 # 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