Remove unused code

There's no nav now

src/app.css

@@ -175,9 +175,6 @@ a.mention span {
   position: relative;
 }
 
-.timeline-deck {
-  padding-bottom: 100px; /* faux nav height */
-}
 .timeline-deck.compact .status {
   max-height: max(25vh, 160px);
   overflow: hidden;