Remove classes that are now in gitlab-ui

- gl-md-whitespace-nowrap
- gl-md-max-w-26

ee/app/assets/stylesheets/components/vulnerability_list.scss

@@ -92,16 +92,3 @@ $selection-summary-with-error-height: 118px;
     @include sticky-top-positioning($security-filter-height + $selection-summary-with-error-height);
   }
 }
-
-// TODO: move to gitlab-ui with https://gitlab.com/gitlab-org/gitlab-ui/-/merge_requests/2740
-.gl-md-max-w-26 {
-  @include media-breakpoint-up(md) {
-    max-width: 26 * px-to-rem(8px);
-  }
-}
-
-.gl-md-white-space-nowrap {
-  @include media-breakpoint-up(md) {
-    white-space: nowrap;
-  }
-}