Remove use of PY_IS_NUMERIC #17862
Description
Depends on #17800
Component: c_lib
Author: Jeroen Demeyer
Branch/Commit: 8300f59
Reviewer: Vincent Delecroix
Issue created by migration from https://trac.sagemath.org/ticket/17862
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Depends on #17800
Component: c_lib
Author: Jeroen Demeyer
Branch/Commit: 8300f59
Reviewer: Vincent Delecroix
Issue created by migration from https://trac.sagemath.org/ticket/17862