remove waitForBroadcastIdle as the original reason for adding it no
longer exists

This was added to let GMSCore switch from D2DTransport (left over from
previos test) to GMSTransport on a boot complete broadcast. GMSCore
doesn't do that anymore so we dont need it anymore.

Bug: 124035377

Test: atest -v CtsBackupTestCases CtsBackupHostTestCases
Change-Id: Iecdac8148fde2b918f6c0adc39183ceb272416fa
1 file changed