Remove compiled message catalogs

A kind of binary files are useless to be maintained in git repo.
I18N team and package distributors have agreed to remove compiled
message catalogs from openstack-auth git repository.

To compile message catalogs, run the following command before
the installation:

  python setup.py compile_catalog

Make sure to install Babel>=1.3 before running the above command.

DocImpact
Closes-Bug: #1196982

Change-Id: Iab2398e942e142f9ab370d8a8f9d539b257e1620
Merge "Remove compiled message catalogs"