Cleaned up the usage of SubscriptionManger.getSubId

Cleaned up the old APIs and replaced with the new APIs.

Bug: 270094276
Test: Boot up + Basic phone funcationality tests
Change-Id: Id372018a437e72c1b5874dec620b5158337bf43c
Merged-In: Id372018a437e72c1b5874dec620b5158337bf43c
2 files changed