Remove Subscription Manager invocation outside of instance lock

To prevent deadlock caused by:
A. SubscriptionManager -> SubscriptionDatabaseManager#readwriteLock -> try to get telephony db instance lock.
B. telephony db write operation -> instance lock -> SubscriptionManager -> try to get SubscriptionDatabaseManager#readwriteLock.

Fix: 310195568
Fix: 304517459
Flag: critical deadlock bug fix
Test: atest TelephonyProviderTest
Test: basic voice call + browsing

Change-Id: Iebe06129eeee62af8c21d0feea453e893da2d79e