Revert "[MM-8497] Ability to set Do Not Disturb for a specified period of time (#16067)" (#17657)

This reverts commit 77d42568f9.

store/store.go

@@ -604,7 +604,6 @@ type StatusStore interface {
 	ResetAll() error
 	GetTotalActiveUsersCount() (int64, error)
 	UpdateLastActivityAt(userID string, lastActivityAt int64) error
-	UpdateExpiredDNDStatuses() ([]*model.Status, error)
 }
 
 type FileInfoStore interface {