Merge pull request #34 from dart-lang/pq-patch-1

remove preview-dart2 flag
diff --git a/tool/travis.sh b/tool/travis.sh
index 59a283c..9ae335f 100755
--- a/tool/travis.sh
+++ b/tool/travis.sh
@@ -15,8 +15,8 @@
 # Run the tests.
 dart test/cli_util_test.dart
 
-# Ensure we can run in Dart 2.
-dart --preview-dart-2 example/main.dart
+# Ensure we can run.
+dart example/main.dart
 
 # Install dart_coveralls; gather and send coverage data.
 if [ "$COVERALLS_TOKEN" ]; then