remove hemp-node appliance

I don't use this anymore, and there are better and still-maintained
alternatives (Docker, vagrant, ansible, etc.) and I no longer feel like
maintaining it.

appliances/hemp-node/Makefile

@@ -1,15 +0,0 @@
-preinstall:
-
-
-postinstall:
-	$(inroot) eselect python set python2.7
-	$(inroot) python-updater -- --usepkg=n
-
-	# we want sshd running
-	chroot "$(CHROOT)" rc-update add sshd default
-
-	# and root account enabled, so we can ssh in
-	chroot "$(CHROOT)" chage -E -1 root
-
-clean:
-

appliances/hemp-node/README

@@ -1,3 +0,0 @@
-
-You should pass "APPLIANCE=hemp-node CHANGE_PASSWORD=NO REMOVE_PORTAGE=NO"
-to the toplevel Makefile for this to be useable

appliances/hemp-node/package.keywords

@@ -1 +0,0 @@
-sys-kernel/gentoo-sources ~amd64 ~x86

appliances/hemp-node/package.use

@@ -1,16 +0,0 @@
-app-editors/nano ncurses
-dev-db/sqlite extensions
-dev-lang/python ssl sqlite threads xml
-dev-util/pkgconfig internal-glib
-dev-vcs/git curl
-dev-vcs/mercurial python_targets_python2_7
-net-misc/curl ssl threads curl_ssl_openssl
-net-misc/openssh ssl
-sys-apps/hwids udev
-sys-apps/kmod tools
-sys-apps/openrc netifrc
-sys-apps/portage python2
-sys-auth/pambase nullok sha512
-sys-devel/gcc cxx nptl
-sys-fs/udev openrc
-sys-kernel/gentoo-sources symlink

appliances/hemp-node/world

@@ -1,5 +0,0 @@
-dev-lang/python:2.7
-dev-python/virtualenv
-dev-vcs/git
-dev-vcs/mercurial
-net-misc/openssh