docs: public boolean removeHeaderView(View v) {
          if (mHeaderViewInfos.size() > 0) {
              boolean result = false;
              ListAdapter adapter = getAdapter();
              if (adapter != null && ((HeaderViewGridAdapter) adapter).removeHeader(v)) {
                  result = true;
              }
              removeFixedViewInfo(v, mHeaderViewInfos);
              return result;
          }
          return false;
      }