Update Dart.gitignore

Dart2js (Dart's JavaScript compiler) no longer creates `foo.dart.precompiled.js` files when compiling.
2014-09-17 21:31:39 -07:00 · 2014-09-17 21:31:39 -07:00 · 64ca10514b
--- a/Dart.gitignore
+++ b/Dart.gitignore
@ -6,7 +6,6 @@ packages

 # Or the files created by dart2js.
 *.dart.js
-*.dart.precompiled.js
 *.js_
 *.js.deps
 *.js.map