fix(backend): remove currentRooms check for backend health

This check currently has issues when the database table is empty (i.e no
users)

backend/api/health.go

@@ -84,11 +84,13 @@ func checkDatabase() ComponentStatus {
 		return status
 	}
 
-	rooms := store.currentRooms()
-	if rooms == nil {
-		status.Status = "down"
-		status.Error = "failed to query rooms"
-	}
+	// TODO need to replace this with some kind of check that just checks that the store
+	// DB table is ready, so that this works when the database has no users
+	// rooms := store.currentRooms()
+	// if rooms == nil {
+	// 	status.Status = "down"
+	// 	status.Error = "failed to query rooms"
+	// }
 
 	return status
 }