Remove client-side BL auth validation

These checks are now performed on the server, and logic to fail
unauthenticated tests is built into the returned remote configuration.

bug:126442904
Test: run gts -m GtsPlacementTestCases (rm auth file first)
Change-Id: Ic8ad877b0b012d1da2eb7bb6b919a72e21e77a55
1 file changed