Remove gentoo repository since most packages are functional from there now.

portage/package.mask

@@ -10,55 +10,3 @@ app-admin/sudo
 gui-wm/hikari
 sys-libs/libunwind
 www-client/firefox
-
-# Gentoo repository.
-app-office/libreoffice::gentoo
-dev-java/icedtea-bin::gentoo
-dev-java/icedtea::gentoo
-dev-java/openjdk::gentoo
-dev-lang/rust-bin::gentoo
-dev-lang/rust::gentoo
-dev-python/pypy3-exe::gentoo
-dev-util/dwarves::gentoo
-dev-util/kbuild::gentoo
-dev-util/valgrind::gentoo
-media-libs/mesa::gentoo
-media-libs/zvbi::gentoo
-media-sound/sox::gentoo
-media-tv/kodi::gentoo
-media-video/guvcview::gentoo
-net-dialup/linux-atm::gentoo
-net-fs/cifs-utils::gentoo
-net-fs/nfs-utils::gentoo
-net-fs/samba::gentoo
-net-libs/libnfsidmap::gentoo
-net-misc/connman::gentoo
-net-misc/spice-gtk::gentoo
-net-wireless/bluez::gentoo
-sys-apps/accountsservice::gentoo
-sys-apps/bubblewrap::gentoo
-sys-apps/fakeroot::gentoo
-sys-apps/intel-sa-00075-tools::gentoo
-sys-apps/isapnptools::gentoo
-sys-apps/iucode_tool::gentoo
-sys-apps/tcp-wrappers::gentoo
-sys-apps/watchdog::gentoo
-sys-apps/xdg-dbus-proxy::gentoo
-#sys-auth/elogind::gentoo
-sys-auth/nss-myhostname::gentoo
-sys-auth/polkit::gentoo
-sys-block/partimage::gentoo
-sys-block/thin-provisioning-tools::gentoo
-sys-boot/lilo::gentoo
-sys-boot/syslinux::gentoo
-sys-devel/gdb::gentoo
-sys-fs/lvm2::gentoo
-sys-fs/lvm2::gentoo
-sys-fs/reiserfsprogs::gentoo
-sys-libs/tevent::gentoo
-x11-apps/igt-gpu-tools::gentoo
-x11-apps/sessreg::gentoo
-x11-base/xorg-server::gentoo
-x11-libs/libva-vdpau-driver::gentoo
-x11-libs/vte::gentoo
-x11-wm/fluxbox::gentoo