Fix merge bug.

runtime/bin/builtin.dart

Index: runtime/bin/builtin.dart
diff --git a/runtime/bin/builtin.dart b/runtime/bin/builtin.dart
index c247819a2f6393ac2a0ba003e9e97c1482c3a56a..b61314748d2e6c80b82e200c9952a9a3884a3b07 100644
--- a/runtime/bin/builtin.dart
+++ b/runtime/bin/builtin.dart
@@ -133,18 +133,3 @@ String _filePathFromPackageUri(Uri uri) {
   _logResolution("# Package: $path");
   return path;
 }
-
-String _filePathFromPackageUri(Uri uri) {
-  if (uri.domain != '') {
-    var path = (uri.path != '') ? '${uri.domain}${uri.path}' : uri.domain;
-    var right = 'package:$path';
-    var wrong = 'package://$path';
-
-    throw "URIs using the 'package:' scheme should look like " +
-          "'$right', not '$wrong'.";
-  }
-
-  var path = _entrypoint.resolve('packages/${uri.path}').path;
-  _logResolution("# Package: $path");
-  return path;
-}