@hide some APIs that will not be used in Android R

Bug: 147319232
Bug: 148123085
Bug: 147732815
Test: atest CtsTelephonyTestCases
Merged-In: I623e52432fc820d302fcdbdb9a88a37deed455ae
Change-Id: I623e52432fc820d302fcdbdb9a88a37deed455ae
6 files changed