remove url polyfill since it isn't needed

README.md

@@ -19,7 +19,7 @@ bundle, using feature detection. The bundles that can be loaded are:
   - `webcomponents-hi` -- HTML Imports (needed by Safari Tech Preview)
   - `webcomponents-hi-ce` -- HTML Imports and Custom Elements (needed by Safari 10)
   - `webcomponents-hi-ce-sd` -- HTML Imports, Custom Elements and Shady DOM/CSS (needed by Safari 9, Firefox, Edge)
-  - `webcomponents-lite` -- HTML Imports, Custom Elements, Shady DOM/CSS and generic platform polyfills (such as URL, Template, ES6 Promise, Constructable events, etc.) (needed by Internet Explorer 11)
+  - `webcomponents-lite` -- HTML Imports, Custom Elements, Shady DOM/CSS and generic platform polyfills (such as Template, ES6 Promise, Constructable events, etc.) (needed by Internet Explorer 11)
 
 ## Browser Support
 

bower.json

@@ -23,7 +23,6 @@
     "shadydom": "webcomponents/shadydom#master",
     "shadycss": "webcomponents/shadycss#master",
     "template": "webcomponents/template#master",
-    "URL": "webcomponents/URL#master",
     "webcomponents-platform": "webcomponents/webcomponents-platform#master"
   }
 }

entrypoints/webcomponents-hi-sd-ce-pf-index.js

@@ -10,12 +10,11 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 'use strict';
 
 /*
- * Polyfills loaded: HTML Imports, Custom Elements, Shady DOM/Shady CSS, platform polyfills (URL/template)
+ * Polyfills loaded: HTML Imports, Custom Elements, Shady DOM/Shady CSS, platform polyfills, template
  * Used in: IE 11
  */
 
 import '../bower_components/webcomponents-platform/webcomponents-platform.js'
-import '../bower_components/URL/url.js'
 import '../bower_components/template/template.js'
 import '../bower_components/es6-promise/dist/es6-promise.auto.min.js'
 import '../bower_components/html-imports/src/html-imports.js'

webcomponents-debug.js

@@ -51,7 +51,6 @@
   // construct full dependency list
   var modules = [
     '../../webcomponents-platform/webcomponents-platform.js',
-    '../../URL/url.js',
     '../../template/template.js',
     '../../es6-promise/dist/es6-promise.auto.min.js',
     '../../html-imports/src/html-imports.js',