removed undefined formatstring() function

formatstring() is not yet present in RDcards, i really need to finish DPS2004#50

commands/pull.lua

@@ -73,7 +73,7 @@ local time = sw:getTime()
         end
       end
 
-      message.channel:send(formatstring(lang.wait_message, {durationtext}))
+      message.channel:send(lang.wait_message_1 .. durationtext .. lang.wait_message_2)
       return
     end
   end