Stop gating on up-to-date sample config file.

The sample config file could get out of date if any of the oslo
libraries changed under us, which would cause everything to fail.
Rather than get blocked by library changes, this check will not be
done anymore.

Change-Id: I96ac66ca9d01a08274c00c98f37453e299ef5423

tox.ini

@@ -15,7 +15,6 @@ commands = python setup.py testr --testr-args='{posargs}'
 envdir = {toxworkdir}/venv
 commands = 
   flake8 {posargs}
-  {toxinidir}/tools/config/check_uptodate.sh
 
 [tox:jenkins]
 downloadcache = ~/cache/pip