Mainline: removed legacy UI for network selection mode.

This cl base on ag/10098777. Now inserted inactive pSIM
will be included in Telephony's get available and
get selectable subInfo list so that logic is no longer
needed.

Bug: 147128878
Test: build pass
Merged-In: I1a0f431f05268d29afce145c3eb720594cfc57a3
Change-Id: I54ed8c69edcdc618f8cf8df8af0fffc8c4f187e8