Remove getActiveNetworkQuotaInfo

Follow-up from aosp/1527738, 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.

Test: m -j layoutlib
Bug: 172183305
Bug: 174123988
Change-Id: I7f5f4b4f1938aa7547e2e0d0d14ba6799b6e2767
1 file changed