581686b8fb
+ tidy up some redundant package versions that are inherited from the ConfigurationFiles mixin. Change-Id: I93329cbf65af3a68ed27284903e7becac01cf5ea Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/349380 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Phil Quitslund <pquitslund@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>