Add test XNameContainer::testRemoveByNameNoneExistingElement

Add test XNameContainer::testRemoveByNameNoneExistingElement to get the
same coverage as before when these case where split with commit
4b98337699.

Change-Id: I45ba5af4e2b3137d9379623556ce4129a860e696
Reviewed-on: https://gerrit.libreoffice.org/68477
Tested-by: Jenkins
Reviewed-by: Jens Carl <j.carl43@gmx.de>

sc/qa/extras/sctablesheetsobj.cxx

@@ -57,6 +57,7 @@ public:
 
     // XNameContainer
     CPPUNIT_TEST(testRemoveByName);
+    CPPUNIT_TEST(testRemoveByNameNoneExistingElement);
 
     CPPUNIT_TEST_SUITE_END();