Clean up UiccPort/Profile on carrier privileges rule load registration

The [un]registration methods were used to notify other telephony
components that carrier privileges access rules has been loaded.

With CarrierPrivilegesCallback providing the carrier privileges
and carrier service change interface and all internal logic handled
in CarrierPrivilegesTracker, the methods here in UiccPort/Profile
has became orphen.

Bug: 224871263
Test: atest UiccProfileTest UiccPortTest CarrierPrivilegesTrackerTest
Change-Id: Idb3cbe66b3fe67548b1507346e1e38140e04bbf8