code: public void removeValue(T value, boolean reload) {
          int idx = getIndex(value);
          if (idx >= 0) {
              removeItemInternal(idx, reload);
          }
      }
docs: Removes a value from the list box. Nothing is done if the value isn't on
  the list box.
  
  @param value  the value to be removed from the list
  @param reload perform a 'material select' reload to update the DOM.