Merge "Revert "Add getAttributionSource() to mocked context."" am: a6e4070ea2 am: 3c566fa36a

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/2000930

Change-Id: I943558211d4d089e4b6ea006e9011dce89d12c44