tree 6847efb9a9dfc38e14197e7eece7b48a20cb8405
parent 22e502bca584537e6c69aa3783422c85533869c1
author Michael R Fairhurst <michaelrfairhurst@gmail.com> 1598229732 -0700
committer GitHub <noreply@github.com> 1598229732 -0700
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Remove unused dart:async import. (#134)

Since this version doesn't support Dart 2.0, this import is not
necessary.