Revert "Add README with details about the status of support for ..." am: ba6984b5cb

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Car/DebuggingRestrictionController/+/3345440

Change-Id: Ie2daba6519c32b38c59abc147287ca0963392db7
Signed-off-by: Automerger Merge Worker <[email protected]>