Fix CppCheck errors

Adress CppCheck errors that can be solved.

python_binding/backend/pybind_OperatorImpl.cpp

@@ -31,7 +31,7 @@ public:
         PYBIND11_OVERRIDE(
             void,
             OperatorImpl,
-            forward,
+            forward
 
         );
     }
@@ -39,7 +39,7 @@ public:
         PYBIND11_OVERRIDE(
             void,
             OperatorImpl,
-            backward,
+            backward
 
         );
     }