Fixes https://github.com/dart-lang/sdk/issues/51754
META and WIN_KEY_LEFT have the same value. The switch case for the
second value is never triggered, so we should remove it.
CoreLibraryReviewExempt: No functional change, just silencing warnings.
Change-Id: I51afe53a3d41e2c2fa820c2bb16e1bdea4583fac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/290702
Commit-Queue: Srujan Gaddam <srujzs@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>