Temporarily no-vote the requirements check for openstacksdk

The current requirements.txt and test-requirements.txt files in the repo
do not end with newlines, project-requirements-change.py checks that the
existing file does end with newlines and fails.  Remove this job to
temporarily so the files can be fixed.

Change-Id: I4b08b158f9d91413e5bc100bb2df153dc474e55b