code: function searchBar_removeEngine(name)
    {
      if (this.isEngineInstalled(name)) {
        var engine = this._bss.getEngineByName(name);
        this._bss.removeEngine(engine);
      }
    }
docs: Remove the search engine with the given name (API call)
  
  @param {string} name
  Name of the search engine to remove