net-libs/libsoup: remove unnecessary python build dep

net-libs/libsoup: remove unnecessary python build dep

Python isn't used during build since the port to libpsl for TLDs,
as tld-parser.py is gone with that work. It is only potentially
used with meson build for the apache tests, but we don't use meson
yet (it's deemed experimental port still in 2.64) and we disable
those tests as well. If with meson port it's needed again
explicitly, it'd be behind test USE (though meson itself is python).

Closes: https://bugs.gentoo.org/683940
Package-Manager: Portage-2.3.62, Repoman-2.3.12
Signed-off-by: Mart Raudsepp <leio@gentoo.org>