Remove clearDefaultsForInactiveSubIds.

clearDefaultsForInactiveSubIds is no longer needed as Telephony
has internal logic to clear or update default settings automatically.

Bug: 128645056
Test: manual
Change-Id: Ib7bc0ae6dba6f10e3a052df1644cc77dd30121a9
Merged-In: Ib7bc0ae6dba6f10e3a052df1644cc77dd30121a9
3 files changed