getActiveNetworkQuotaInfo has never been in API surface since it was introduced. It became essentially functionless since android O, so there should be no usage dependency upon the hidden method, In order to support ConnectivityService mainline, remove the useless function to prevent necessary dependency. Bug: 172183305 Test: atest FrameworksNetTests Change-Id: Ia685b3260256d465ef614b2f577d13344074c787