gh-106084: Remove old PyObject call aliases (#106085)

Remove old aliases which were kept backwards compatibility with
Python 3.8:

* _PyObject_CallMethodNoArgs()
* _PyObject_CallMethodOneArg()
* _PyObject_CallOneArg()
* _PyObject_FastCallDict()
* _PyObject_Vectorcall()
* _PyObject_VectorcallMethod()
* _PyVectorcall_Function()

Update code which used these aliases to use new names.

Python/errors.c

@@ -1485,7 +1485,7 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
     }
 
     /* Explicitly call file.flush() */
-    PyObject *res = _PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
+    PyObject *res = PyObject_CallMethodNoArgs(file, &_Py_ID(flush));
     if (!res) {
         return -1;
     }