Remove outdated shim notes

app/assets/stylesheets/framework/common.scss

@@ -491,7 +491,8 @@ img.emoji {
   🚨 Do not use these classes — they are deprecated and being removed. 🚨
   See https://gitlab.com/gitlab-org/gitlab/issues/36857 for more details.
 
-  Instead, if you need a spacing class, add it below using the following values.
+  Instead, if you need a spacing class, please use one from Gitlab UI —
+  https://unpkg.com/browse/@gitlab/ui/src/scss/utilities.scss — which uses the following scale.
     $gl-spacing-scale-0: 0;
     $gl-spacing-scale-1: 2px;
     $gl-spacing-scale-2: 4px;
@@ -506,14 +507,6 @@ img.emoji {
     $gl-spacing-scale-11: 64px;
     $gl-spacing-scale-12: 80px;
     $gl-spacing-scale-13: 96px;
-
-  E.g., a padding top of 96px can be added using:
-  .gl-shim-pt-13 {
-    padding-top: 96px;
-  }
-
-  Please use -shim- so it can be differentiated from the old scale classes.
-  These will be replaced when the Gitlab UI utilities are included.
 **/
 @each $index, $padding in $spacing-scale {
   #{'.gl-p-#{$index}-deprecated-no-really-do-not-use-me'} { padding: $padding; }