Merge branch '326634-remove-str-truncated-60-class-from-common-scss' into 'master'

Remove str-truncated-60 class from common.scss

See merge request gitlab-org/gitlab!58210

app/assets/stylesheets/framework/common.scss

@@ -121,10 +121,6 @@ hr {
     @include str-truncated(30%);
   }
 
-  &-60 {
-    @include str-truncated(60%);
-  }
-
   &-100 {
     @include str-truncated(100%);
   }