Revert "Support KeyEvent.KEYCODE_ENTER on the keyguard"

This reverts commit 5af41e1dbd812d4cfabcc73ed9ffceb5fa733582.

Reason for revert: b/304349374
Bug: 270883077

Change-Id: Ibeaac45cdc241d908eaff04402a01ed56502ff9b
2 files changed