update test_cvedb.py to remove long test

Author: 22f1001635

test/test_cvedb.py

@@ -93,7 +93,6 @@ def test_new_database_schema(self):
 
         self.cvedb.db_close()
 
-    @pytest.mark.skipif(not LONG_TESTS(), reason="Skipping long tests")
     def test_missing_unknown_metric_after_update(self):
         self.cvedb.init_database()