Follow-up from "Restyle changes header & file tree"

The following discussion from !23665 (merged) should be addressed:

suggestion (non-blocking): I'm 90% certain we can actually just remove our usage of content-block here. How would you feel about creating a follow up issue for this?

diff --git a/app/assets/javascripts/diffs/components/compare_versions.vue b/app/assets/javascripts/diffs/components/compare_versions.vue
index 63ce43a193d..6c0ec62b2bc 100644
--- a/app/assets/javascripts/diffs/components/compare_versions.vue
+++ b/app/assets/javascripts/diffs/components/compare_versions.vue
@@ -89,7 +89,7 @@ export default {
 <template>
   <div class="mr-version-controls border-top">
     <div
-      class="mr-version-menus-container content-block"
+      class="mr-version-menus-container"
       :class="{
         [CENTERED_LIMITED_CONTAINER_CLASSES]: isLimitedContainer,
       }"
diff --git a/app/assets/stylesheets/pages/merge_requests.scss b/app/assets/stylesheets/pages/merge_requests.scss
index 84daec4fb43..c0a6d385baf 100644
--- a/app/assets/stylesheets/pages/merge_requests.scss
+++ b/app/assets/stylesheets/pages/merge_requests.scss
@@ -731,11 +731,6 @@
     }
   }
 
-  .content-block {
-    padding: $gl-padding;
-    border-bottom: 0;
-  }
-
   .comments-disabled-notif {
     line-height: 28px;