Devtools UI: Remove redundant tooltips

Source/devtools/front_end/elements/StylesSidebarPane.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 2264 matching lines @@
         this._expandElement.className = "expand-element";
 
         var propertyRenderer = new WebInspector.StylesSidebarPropertyRenderer(this._styleRule.rule(), this.node(), this.name, this.value);
         if (this.property.parsedOk) {
             propertyRenderer.setColorHandler(this._processColor.bind(this));
             propertyRenderer.setBezierHandler(this._processBezier.bind(this));
         }
 
         this.listItemElement.removeChildren();
         this.nameElement = propertyRenderer.renderName();
-        this.nameElement.title = this.property.propertyText;

[paulirish, 2015/08/03 16:26:20]

If someone has forced colors to render as HSL, the wont be able to see the
original text.
But that appears to be the only issue.
I'm fine with nuking this.

         this.valueElement = propertyRenderer.renderValue();
         if (!this.treeOutline)
             return;
 
         var indent = WebInspector.moduleSetting("textEditorIndent").get();
         this.listItemElement.createChild("span", "styles-clipboard-only").createTextChild(indent + (this.property.disabled ? "/* " : ""));
         this.listItemElement.appendChild(this.nameElement);
         this.listItemElement.createTextChild(": ");
         this.listItemElement.appendChild(this._expandElement);
         this.listItemElement.appendChild(this.valueElement);
@@ skipping 952 matching lines @@
 
     /**
      * @override
      * @return {?WebInspector.ToolbarItem}
      */
     item: function()
     {
         return this._button;
     }
 }