add player rating to the db

main-server/app/services/matchmaking_service.rb

@@ -186,8 +186,7 @@ class MatchmakingService
     # Adds the user to the queue and immediately tries to pair them.
     # The result (match or timeout) is delivered asynchronously via
     # MatchmakingChannel broadcasts.
-    def enqueue(user_id, rating: nil)
-      rating ||= config.default_rating
+    def enqueue(user_id, rating:)
       results = call_pair_script("enqueue", extra: [ user_id, rating ])
       process_results(results)
     end