Use offset-based Ci_Py{Class,Static}Method_GetFunc for 3.10 and 3.12

Summary:
Deleting the exported symbol from 3.10.cinder and using the newer offset-based
functions for both Python versions.

Reviewed By: jbower-fb

Differential Revision: D60386312

fbshipit-source-id: 698e7cb60aaece8a4b9677ae5be5b4f4e10ca686

Include/cinder/exports.h

@@ -16,9 +16,6 @@ extern "C" {
  * CinderX work.
  */
 
-CiAPI_FUNC(PyObject *) Ci_PyClassMethod_GetFunc(PyObject *method);
-CiAPI_FUNC(PyObject *) Ci_PyStaticMethod_GetFunc(PyObject *method);
-
 CiAPI_FUNC(PyObject *) Ci_dict_subscript(PyObject *mp, PyObject *key);
 CiAPI_FUNC(PyObject *) Ci_list_subscript(PyObject *list, PyObject *item);
 CiAPI_FUNC(PyObject *) Ci_tuple_subscript(PyObject *self, PyObject *item);

Objects/funcobject.c

@@ -1280,15 +1280,3 @@ PyStaticMethod_New(PyObject *callable)
     }
     return (PyObject *)sm;
 }
-
-PyObject *
-Ci_PyClassMethod_GetFunc(PyObject *method) {
-    classmethod *class_method = (classmethod *) method;
-    return class_method->cm_callable;
-}
-
-PyObject *
-Ci_PyStaticMethod_GetFunc(PyObject *sm) {
-    staticmethod *method = (staticmethod *)sm;
-    return method->sm_callable;
-}