Revert "Add broadcast receiver to enable/disable LE audio"

This reverts commit c8d94d18.

Reason for revert: Likely culprit for b/414762372 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Bug: 414762372
Change-Id: I23810715eccf25ffc2bf816195ad38b38cc74c76