message: Remove obsolete declarations for buttons on EditMessageComposer on ThreadView
  Those declarations are no longer necessary to align the buttons with the right edge of the input area and background.
diff: @@ -982,9 +982,4 @@ $threadInfoLineHeight: calc(2 * $font-12px); // See: _commons.scss
  .mx_EditMessageComposer {
  margin-left: 30px !important; // align start of first letter with that of the event body
  }
  -
  - .mx_EditMessageComposer_buttons {
  - padding-right: 11px; // align with right edge of input
  - margin-right: 0; // align with right edge of background
  - }
  }
  