Remove unused time_patcher
Remove unused time_patcher

There is no reason to patch time now, tests succeed without it

Change-Id: I3cf3017b5f86bae35276037c60cfec8dc3be20ae

klmitch/python-keystoneclient,magic0704/python-keystoneclient,Mercador/python-keystoneclient,magic0704/python-keystoneclient,sdpp/python-keystoneclient,Mercador/python-keystoneclient,klmitch/python-keystoneclient,sdpp/python-keystoneclient