remove redunatnt PyVectorcall_Function call in generic alias object c

Author: prakashsellathurai

Objects/genericaliasobject.c

@@ -649,14 +649,7 @@ ga_vectorcall(PyObject *self, PyObject *const *args,
               size_t nargsf, PyObject *kwnames)
 {
     gaobject *alias = (gaobject *) self;
-    vectorcallfunc origin_vectorcall = PyVectorcall_Function(alias->origin);
-    PyObject *obj;
-    if (origin_vectorcall != NULL) {
-        obj = origin_vectorcall(alias->origin, args, nargsf, kwnames);
-    } else {
-        /* Fallback to generic call path*/
-        obj = PyObject_Vectorcall(alias->origin, args, nargsf, kwnames);
-    }
+    PyObject *obj = PyObject_Vectorcall(alias->origin, args, nargsf, kwnames);
     return set_orig_class(obj, self);
 }