SAKE: Do not store ghost files for Mario Kart Wii competitions

sake/mario_kart_wii.go

@@ -38,6 +38,7 @@ func handleMarioKartWiiFileUploadRequest(moduleName string, responseWriter http.
 	scoreString := query.Get("score")
 	pidString := query.Get("pid")
 	playerInfo := query.Get("playerinfo")
+	_, isContest := query["contest"]
 
 	regionIdInt, err := strconv.Atoi(regionIdString)
 	if err != nil {
@@ -132,6 +133,10 @@ func handleMarioKartWiiFileUploadRequest(moduleName string, responseWriter http.
 		return
 	}
 
+	if isContest {
+		ghostFile = nil
+	}
+
 	err = database.UploadMarioKartWiiGhostFile(pool, ctx, regionId, courseId, score, pid, playerInfo, ghostFile)
 	if err != nil {
 		logging.Error(moduleName, "Failed to insert the ghost file into the database")