Fix some PHPMD issues.

app/Api/V2/Controllers/Model/Bill/IndexController.php

@@ -61,13 +61,12 @@ class IndexController extends Controller
     }
 
     /**
-     * @param Request $request
      *
      * TODO see autocomplete/accountcontroller for list.
      *
      * @return JsonResponse
      */
-    public function index(Request $request): JsonResponse
+    public function index(): JsonResponse
     {
         $this->repository->correctOrder();
         $bills       = $this->repository->getBills();

app/Api/V2/Controllers/Model/Bill/ShowController.php

@@ -63,7 +63,7 @@ class ShowController extends Controller
     /**
      * TODO this endpoint is not documented
      */
-    public function show(Request $request, Bill $bill): JsonResponse
+    public function show(Bill $bill): JsonResponse
     {
         $transformer = new BillTransformer();
         $transformer->setParameters($this->parameters);

app/Api/V2/Controllers/Model/Bill/SumController.php

@@ -69,6 +69,7 @@ class SumController extends Controller
      * @param DateRequest $request
      *
      * @return JsonResponse
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
     public function paid(DateRequest $request): JsonResponse
     {
@@ -85,6 +86,7 @@ class SumController extends Controller
      * TODO see autocomplete/accountcontroller for list.
      *
      * @param DateRequest $request
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      *
      * @return JsonResponse
      */