No longer needed as the code to generate flag files based on
this environment variable is removed in Android 13.
Bug: 231946889
Test: Build and boot,
Change-Id: I8ce57619aa4d1e6457f3f864bf5e403f727c040c
(cherry picked from commit ba830eb81b)
Merged-In: I8ce57619aa4d1e6457f3f864bf5e403f727c040c