Remove the sticky mobile Call/Text bar

Also drops the body padding and Chatwoot bubble offset that only
existed to make room for it.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/app/globals.css

@@ -158,9 +158,3 @@
     @apply tracking-tight text-balance;
   }
 }
-/* Keep the Chatwoot bubble clear of the mobile Call/Text bar. */
-@media (max-width: 767px) {
-  .woot-widget-bubble.woot-elements--right {
-    bottom: 4.5rem !important;
-  }
-}