Remove usused "FetchCommonPointer" utility code (GH-4380)

Cython/Utility/CommonStructures.c

@@ -125,36 +125,3 @@ bad:
 }
 #endif
 
-
-/////////////// FetchCommonPointer.proto ///////////////
-
-static void* __Pyx_FetchCommonPointer(void* pointer, const char* name);
-
-/////////////// FetchCommonPointer ///////////////
-
-
-static void* __Pyx_FetchCommonPointer(void* pointer, const char* name) {
-    PyObject* abi_module = NULL;
-    PyObject* capsule = NULL;
-    void* value = NULL;
-
-    abi_module = PyImport_AddModule((char*) __PYX_ABI_MODULE_NAME);
-    if (!abi_module) return NULL;
-    Py_INCREF(abi_module);
-
-    capsule = PyObject_GetAttrString(abi_module, name);
-    if (!capsule) {
-        if (!PyErr_ExceptionMatches(PyExc_AttributeError)) goto bad;
-        PyErr_Clear();
-        capsule = PyCapsule_New(pointer, name, NULL);
-        if (!capsule) goto bad;
-        if (PyObject_SetAttrString(abi_module, name, capsule) < 0)
-            goto bad;
-    }
-    value = PyCapsule_GetPointer(capsule, name);
-
-bad:
-    Py_XDECREF(capsule);
-    Py_DECREF(abi_module);
-    return value;
-}

Cython/Utility/ModuleSetupCode.c

@@ -1678,7 +1678,6 @@ static void __Pyx_FastGilFuncInit(void);
 #endif
 
 /////////////// FastGil ///////////////
-//@requires: CommonStructures.c::FetchCommonPointer
 // The implementations of PyGILState_Ensure/Release calls PyThread_get_key_value
 // several times which is turns out to be quite slow (slower in fact than
 // acquiring the GIL itself).  Simply storing it in a thread local for the
@@ -1780,7 +1779,6 @@ static void __Pyx_FastGilFuncInit0(void) {
 #else
 
 static void __Pyx_FastGilFuncInit0(void) {
-  CYTHON_UNUSED_VAR(&__Pyx_FetchCommonPointer);
 }
 
 #endif