removes the specified view of a layout-like component
| id | id|object | the id or object of the child view which needs to be removed | 
webix.ui({
    id:"mylayout"
    cols:[
      { id:"mytemplate1" },
      { id:"mytemplate2" },
      { id:"mytemplate3" }
   ]
})
...
$$("mylayout").removeView("mytemplate2");
The method works for layout rows and cols, multiview cells, accordion and carousel panels, toolbar and form controls.