Revert "Add the assisted dialing carrier config."

This reverts commit af7b8c0a67f1f416e9156c375a940a47389ab838.

Reason for revert: we're cutting the feature from P

Change-Id: I1ccc2c36b480f64c3a8b3df7eee73f80b7863722
Bug: 73727182
7 files changed