Remove unnececary query

src/main/java/nl/tudelft/ewi/queue/repository/LabRepository.java

@@ -9,7 +9,5 @@ public interface LabRepository extends CrudRepository<Lab, Long> {
     @Override
 	List<Lab> findAll();
 
-    List<Lab> findById();
-
     Lab findFirstByOrderByIdAsc();
 }