Removed unused methods

Removed getAllSubscriptionInfoCount(), getDefaultSmsPhoneId(), and
getDefaultDataPhoneId().

Bug: 239607619
Test: Manual
Merged-In: I1e4110e4bb7dbbc05d51f75d67f451a8ce3bf229
Change-Id: I1e4110e4bb7dbbc05d51f75d67f451a8ce3bf229
2 files changed