bpo-41123: Remove PyLong_FromUnicode() (GH-21204)

diff --git a/Objects/abstract.c b/Objects/abstract.c
index 0d3f4ac..3494f33 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1429,7 +1429,7 @@
         return NULL;
 
     if (PyUnicode_Check(o))
-        /* The below check is done in PyLong_FromUnicode(). */
+        /* The below check is done in PyLong_FromUnicodeObject(). */
         return PyLong_FromUnicodeObject(o, 10);
 
     if (PyBytes_Check(o))