UX: Remove extra border on old mobile post notices

UX: Remove extra border on old mobile post notices

diff --git a/app/assets/stylesheets/mobile/topic-post.scss b/app/assets/stylesheets/mobile/topic-post.scss
index 831e47b..173df3d 100644
--- a/app/assets/stylesheets/mobile/topic-post.scss
+++ b/app/assets/stylesheets/mobile/topic-post.scss
@@ -478,4 +478,8 @@ span.highlighted {
 
 .post-notice {
   margin-bottom: 1em;
+  &.old {
+    border-top: none;
+    padding-top: 0;
+  }
 }

GitHub sha: 88a46981