Revert "Use getPhoneNumber API to get phone number on T"

This reverts commit 35b45a774df3efb818cd88e3ed1870792b333cac.

Reason for revert: Some carrier require to see SIM phone number in Settings UI. Revert for now and need to think of a better UI.

Bug: 228424584
Bug: 159459637
Test: build and manual test
Change-Id: I9381f7cdc6343a2e3b886d58f732587a2c8d8b7e
1 file changed