Revert "Telephony light grey list clean up for Q"

Reason for revert: This CL caused MMS break because Bugle is using the
hidden API in Q's darkgrey list. The proper fix should either come from
Bugle team if their apk moved to Q, or compat team to explore why this
caused issue for app target on P.

Bug: 117899984
Test: telehony unit test
Change-Id: I49207b7f66d75e6e6cc3aa4828601938a3172828