Revert "Deprecate retailDemo permission protection flag."

This reverts commit 7831df9901d1a102428045ae3b92dd74ef1fa9c7.

Reason for revert: Can’t deprecate before 24Q2 cut
Fixes: 318362596
Test: presubmit

Change-Id: I5f6f97c3258b3ded48907d635858411407310fb4
3 files changed