Cleaned up the flag backup_and_restore_for_enable_2g

Cleaned up the 24Q3 flag backup_and_restore_for_enable_2g

Test: atest TelephonyProviderTest
Test: Basic telephony functionality tests
Bug: 314734614
Flag: EXEMPT bug fix
Change-Id: I051e0c50707e00d904b950bcbaf7dff42199eaa5
2 files changed