Updated openstack/openstack
Project: openstack/swift  e16ea691d0a53374b36dddf2da2a77a2a3f19a7a
null
Remove dependencies on pep8, pyflakes and flake8

They should be determined by the hacking dependency
implicitely.

Change-Id: I8805f7b0ef9f2b1f59be342e9c6d032330707688