remove unused variable

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/java/com/nextcloud/talk/adapters/items/ConversationItem.java

@@ -351,7 +351,6 @@ public class ConversationItem extends AbstractFlexibleItem<ConversationItem.Conv
     }
 
     static class ConversationItemViewHolder extends FlexibleViewHolder {
-        ImageView userStatusImage;
 
         RvItemConversationWithLastMessageBinding binding;