Clean up TODO comment for TelephonyManager.getIccAuthentication

This change removes the redundant TODO comment since he API has been protected with settled-down permission USE_ICC_AUTH_WITH_DEVICE_IDENTIFIER.

Bug: 73660190
Change-Id: Ic419dc6da464e257e64fcb02ad2e5db5f54450b1
Test: m -j
Flag: EXEMPT clean up
1 file changed