4751ed0bb8
The non-terminal `patterns` is not used any more. This CL removes the rule where it is introduced. Change-Id: I2a8e957957d71999807a0e00fe102e61ed5ec173 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/288202 Reviewed-by: William Hesse <whesse@google.com> Commit-Queue: Erik Ernst <eernst@google.com>