do not lock petitparser (#18703)

yjbanov · web-flow · commit d501c49cce4c · 2020-06-01T11:49:45.000-07:00
diff --git a/lib/web_ui/pubspec.yaml b/lib/web_ui/pubspec.yaml
@@ -17,8 +17,6 @@ dev_dependencies:
   build_runner: 1.7.2
   build_test: 1.0.0
   build_web_compilers: 2.7.1
-  # TODO(yjbanov): the Dart SDK complains about nonVirtual for some reason.
-  petitparser: 3.0.2
   yaml: 2.2.0
   watcher: 0.9.7+12
   web_engine_tester:
