[polymer] remove bogus warning about JS inline scripts

pkg/polymer/lib/src/build/linter.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Logic to validate that developers are correctly using Polymer constructs.
 /// This is mainly used to produce warnings for feedback in the editor.
 library polymer.src.build.linter;
 
 import 'dart:async';
 
@@ skipping 226 matching lines @@
         if (!_validateCustomAttributeName(attr, attrsSpan)) break;
       }
     }
 
     var oldValue = _inPolymerElement;
     _inPolymerElement = true;
     super.visitElement(node);
     _inPolymerElement = oldValue;
   }
 
-  /// Produces warnings for malformed script tags. In html5 leaving off type= is
-  /// fine, but it defaults to text/javascript. Because this might be a common
-  /// error, we warn about it when  src file ends in .dart, but the type is
-  /// incorrect, or when users write code in an inline script tag of a custom
-  /// element.
-  ///
-  /// The hope is that these cases shouldn't break existing valid code, but that
-  /// they'll help Polymer authors avoid having their Dart code accidentally
-  /// interpreted as JavaScript by the browser.
+  /// Checks for multiple Dart script tags in the same page, which is invalid.
   void _validateScriptElement(Element node) {
     var scriptType = node.attributes['type'];
     var isDart = scriptType == 'application/dart';
     var src = node.attributes['src'];
 
-    if (scriptType == null) {
-      if (src == null && _inPolymerElement) {
-        // TODO(sigmund): revisit this check once we start interop with polymer
-        // elements written in JS. Maybe we need to inspect the contents of the
-        // script to find whether there is an import or something that indicates
-        // that the code is indeed using Dart.
-        _logger.warning('script tag in polymer element with no type will '
-            'be treated as JavaScript. Did you forget type="application/dart"?',
-            span: node.sourceSpan);
-      }
-    } else if (isDart) {
+    if (isDart) {
       if (_dartTagSeen) {
         _logger.warning('Only one "application/dart" script tag per document '
             'is allowed.', span: node.sourceSpan);
       }
       _dartTagSeen = true;
     }
 
     if (src == null) return;
 
     if (src == 'packages/polymer/boot.js') {
@@ skipping 151 matching lines @@
     'Make sure the script tag is placed after all HTML imports.';
 
 const String BOOT_JS_DEPRECATED =
     '"boot.js" is now deprecated. Instead, you can initialize your polymer '
     'application by calling "initPolymer()" in your main. If you don\'t have a '
     'main, then you can include our generic main by adding the following '
     'script tag to your page: \'<script type="application/dart">export '
     '"package:polymer/init.dart";</script>\'. Additionally you need to '
     'include: \'<script src="packages/browser/dart.js"></script>\' in the page '
     'too. Make sure these script tags come after all HTML imports.';