Remove getIntWithSubId in TelephonyManager.

For multi-SIM case, getIntWithSubId would check if a Global.Settings
value doesn't exist for a specific SIM (for example mobile_data0),
it copies value from general one (mobile_data).

Test: Telephony unittests
Bug: 34351475
Change-Id: I870e6f3c193cf3bdeae22fe1a750b0a0ec782f9b