Issue #21449: Removed private function _PyUnicode_CompareWithId.

Include/unicodeobject.h

@@ -2037,15 +2037,6 @@ PyAPI_FUNC(int) PyUnicode_Compare(
     );
 
 #ifndef Py_LIMITED_API
-/* Compare a string with an identifier and return -1, 0, 1 for less than,
-   equal, and greater than, respectively.
-   Raise an exception and return -1 on error. */
-
-PyAPI_FUNC(int) _PyUnicode_CompareWithId(
-    PyObject *left,             /* Left string */
-    _Py_Identifier *right       /* Right identifier */
-    );
-
 /* Test whether a unicode is equal to ASCII identifier.  Return 1 if true,
    0 otherwise.  Return 0 if any argument contains non-ASCII characters.
    Any error occurs inside will be cleared before return. */

Objects/unicodeobject.c

@@ -11011,15 +11011,6 @@ PyUnicode_Compare(PyObject *left, PyObject *right)
     return -1;
 }
 
-int
-_PyUnicode_CompareWithId(PyObject *left, _Py_Identifier *right)
-{
-    PyObject *right_str = _PyUnicode_FromId(right);   /* borrowed */
-    if (right_str == NULL)
-        return -1;
-    return PyUnicode_Compare(left, right_str);
-}
-
 int
 PyUnicode_CompareWithASCIIString(PyObject* uni, const char* str)
 {