Made the slider label populate as well, plus removed redundant window function

js/views/settings_view.js

@@ -71,6 +71,7 @@
     },
     populate() {
       this.$('input').val(this.value);
+      this.$('label').html(`${this.value} Hours`);
     },
   });
 

preload.js

@@ -160,7 +160,6 @@ installGetter('hide-menu-bar', 'getHideMenuBar');
 installSetter('hide-menu-bar', 'setHideMenuBar');
 
 // Get the message TTL setting
-window.getMessageTTL = () => window.storage.get('message-ttl', 24);
 installGetter('message-ttl', 'getMessageTTL');
 installSetter('message-ttl', 'setMessageTTL');