Revert "Check if WindowInfosListener is present during remove"

Revert submission 21756542-window-infos-listener-unregister-on-cleanup

Reason for revert: b/271650598

Reverted changes: /q/submissionid:21756542-window-infos-listener-unregister-on-cleanup

Change-Id: I577f326cd6f270e9228358df04509aac60caaef5
1 file changed