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
Merge "Remove vim headers"