Remove unused copyright from nova.api.__init__

This patch removes unused license doc from nova/api/__init__.py.

Change-Id: I40b7dbce27ece7a56c9fd3186fa5c4a88623d32b
Merge "Remove unused copyright from nova.api.__init__"
Add consoleauth DB objects

Change-Id: I2ca7b8b7a671c1edeeec6bc85fea85a5b9bfd514