gh-104773: PEP 594: Remove the nis module

[vstinner]

• Issue: PEP 594: Remove stdlib modules scheduled for deletion in Python 3.13 #104773

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[hugovk]

Some extra nismodule / libnsl bits to remove?

Tools/c-analyzer/cpython/ignored.tsv
285:Modules/nismodule.c - TIMEOUT -
286:Modules/nismodule.c - aliases -
Tools/c-analyzer/cpython/_parser.py
123:Modules/nismodule.c /usr/include/tirpc
Tools/c-analyzer/cpython/globals-to-fix.tsv
458:Modules/nismodule.c nisproc_maplist_2 res -
PC/pyconfig.h
679:#define HAVE_LIBNSL 1

[vstinner]

Some extra nismodule / libnsl bits to remove?

Well spotted: removed as well.

For now, I prefer to keep this code in configure.ac, since I don't know its purpose and I cannot test a change on Solaris:

$ git grep -B1 -A1 '\<nsl\>'
configure.ac-# Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl.
configure.ac:AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4
configure.ac-AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets