Patch #1580872: Remove duplicate declaration of PyCallable_Check.
diff --git a/Include/abstract.h b/Include/abstract.h
index 9b0b3f0..14510c6 100644
--- a/Include/abstract.h
+++ b/Include/abstract.h
@@ -288,9 +288,10 @@
 
        */
 
+       /* Declared elsewhere
+
      PyAPI_FUNC(int) PyCallable_Check(PyObject *o);
 
-       /*
 	 Determine if the object, o, is callable.  Return 1 if the
 	 object is callable and 0 otherwise.