message: Drop duplicate code for `clean-discussions`
  Follows
diff: tab-size: 4 !important;
  }
  -/* Collapse multiple discussion items */
  -/* https://github.com/sindresorhus/refined-github/commit/efa38bfd1048f0daa1d3d147840b1709f53713bd */
  -.discussion-item + .discussion-item {
  - padding-top: 0 !important;
  - border-top: none !important;
  -}
  -
  /* For `open-all-selected` and `pr-filters`: set a reduced padding for all buttons for #1830 and #1904 */
  .table-list-filters .table-list-header-toggle .select-menu-button {
  padding-right: 0;
  