Fix: Small bugs

src/DevTools/DevTools.es6

@@ -58,34 +58,12 @@ export default class DevTools extends util.Emitter
 
         return this;
     }
-    remove(name)
-    {
-        var tool = this._tools[name];
-
-        delete this._tools[name];
-        this._navBar.remove(name);
-
-        tool.destroy();
-        if (tool.active)
-        {
-            var keys = util.keys(this._tools);
-            if (keys.length > 0) this.showTool(keys[0]);
-        }
-
-        return this;
-    }
     get(name)
     {
         var tool = this._tools[name];
 
         if (tool) return tool;
     }
-    destroy()
-    {
-        util.each(this._tools, (tool, key) => this.remove(key));
-        this._navBar.destroy();
-        this._$el.remove();
-    }
     showTool(name)
     {
         if (this._curTool === name) return this;

src/DevTools/NavBar.es6

@@ -22,16 +22,6 @@ export default class NavBar extends util.Emitter
         this._$ul.prepend(`<li class="${name}" ontouchstart>${name}</li>`);
         this._resetWidth();
     }
-    remove(name)
-    {
-        this._len--;
-        this._$ul.find(`li.${name}`).remove();
-        this._resetWidth();
-    }
-    destroy()
-    {
-        this._$el.remove();    
-    }
     activeTool(name)
     {
         var self = this;

src/DevTools/Tool.es6

@@ -16,8 +16,4 @@ export default class Tool
 
         return this;
     }
-    destroy()
-    {
-        this._$el.remove();
-    }
 }