Implements test for remove tail

Signed-off-by: CapXilinx <melik-merkumians@acin.tuwien.ac.at>

source/tests/utils/doublylinkedlistTests.cpp

@@ -230,14 +230,10 @@ TEST(DoublyLinkedList, RemoveFirstElementInList) {
   DoublyLinkedListNode *node_to_be_deleted = list.first;
   DoublyLinkedListRemoveNode(&list, &node_to_be_deleted);
   CHECK_EQUAL(2, test_data_1);
-  CHECK_EQUAL(4, *((int*)list.first->data));
+  CHECK_EQUAL(4, *( (int *)list.first->data ) );
   DoublyLinkedListDestroy(&list);
 }
 
-TEST(DoublyLinkedList, RemoveLastElementInList) {
-  FAIL("Not implemented!");
-}
-
 TEST(DoublyLinkedList, RemoveMiddleElement) {
   FAIL("Not implemented!");
 }