refactoring jquery isolation in shape tracing script

--HG--
branch : 1.x

src/Orchard.Web/Modules/Orchard.DesignerTools/Scripts/orchard-designertools-shapetracing.js

@@ -1,5 +1,4 @@
-(function ($) {
-    $(document).ready(function () {
+jQuery(function($) {
     // default shape window height when first opened
     var defaultHeight = 200;
 
@@ -435,8 +434,6 @@
         event.stopPropagation();
     });
 
-    });
-
     // recursively create a node for the shapes tree
     function createTreeNode(shapeNode) {
         var node = $('<li></li>');
@@ -461,4 +458,4 @@
         return node;
     }
 
-})(jQuery);
+});