Updated openstack/openstack
Project: openstack/oslo.config  3b8197e8ba3ed76bbd1a56bce2c7c3c92c830da9
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Remove copyright from empty files

According to policy change in HACKING:
http://docs.openstack.org/developer/hacking/#openstack-licensing
empty files should no longer contain copyright notices.

Closes-Bug: #1262424
Change-Id: Id6396fc396376c7e8bb0c8eb4abe472a97c014c5