tools: remove rpm build scripts

I added these in 2013 but I don't think anyone uses them and I'm not
even sure they still produce a working package.

I move to remove them because that makes subsequent cleanup a little
easier.

PR-URL: #43647
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>