diff --git a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/Manifest b/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/Manifest
deleted file mode 100644
index ab6f1bfc5a..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/Manifest
+++ /dev/null
@@ -1 +0,0 @@
-DIST pambase-20101024.tar.bz2 3201 RMD160 3b0c5950a7e2cafd3fe93a5663b35e851d5975bf SHA1 89bca8e926290518192f5728aab8794f028931f5 SHA256 89d60dd598d3da0ce1d1bcd7dc325f6c55002a1d4a7d27f9bb024f6732e9fba4
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/files/pambase-20101024-disable-nullok.patch b/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/files/pambase-20101024-disable-nullok.patch
deleted file mode 100644
index bceae89e94..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/files/pambase-20101024-disable-nullok.patch
+++ /dev/null
@@ -1,20 +0,0 @@
---- a/system-auth.in
-+++ b/system-auth.in
-@@ -7,7 +7,7 @@
- #if HAVE_KRB5
- auth		KRB5_CONTROL	pam_krb5.so KRB5_PARAMS
- #endif
--auth		required	pam_unix.so try_first_pass LIKEAUTH nullok DEBUG
-+auth		required	pam_unix.so try_first_pass LIKEAUTH DEBUG
- /* This is needed to make sure that the Kerberos skip-on-success won't cause a bad jump. */
- auth		optional	pam_permit.so
-  
-@@ -27,7 +27,7 @@
- #if HAVE_KRB5
- password	KRB5_CONTROL	pam_krb5.so KRB5_PARAMS
- #endif
--password	required	pam_unix.so try_first_pass UNIX_AUTHTOK nullok UNIX_EXTENDED_ENCRYPTION DEBUG
-+password	required	pam_unix.so try_first_pass UNIX_AUTHTOK UNIX_EXTENDED_ENCRYPTION DEBUG
- /* This is needed to make sure that the Kerberos skip-on-success won't cause a bad jump. */
- password	optional	pam_permit.so
-  
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/pambase-20101024-r2.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/pambase-20101024-r2.ebuild
deleted file mode 100644
index aef91d2b0a..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/sys-auth/pambase/pambase-20101024-r2.ebuild
+++ /dev/null
@@ -1,101 +0,0 @@
-# Copyright 1999-2012 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/sys-auth/pambase/pambase-20101024-r2.ebuild,v 1.4 2012/05/19 21:34:59 flameeyes Exp $
-
-EAPI=4
-
-inherit eutils
-
-DESCRIPTION="PAM base configuration files"
-HOMEPAGE="http://www.gentoo.org/proj/en/base/pam/"
-SRC_URI="http://dev.gentoo.org/~flameeyes/${PN}/${P}.tar.bz2"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="alpha amd64 arm hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86 ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~x86-freebsd ~amd64-linux ~ia64-linux ~x86-linux"
-IUSE="debug cracklib passwdqc consolekit gnome-keyring selinux mktemp pam_ssh +sha512 pam_krb5 minimal"
-RESTRICT="binchecks"
-
-RDEPEND="
-	|| (
-		>=sys-libs/pam-0.99.9.0-r1
-		( sys-auth/openpam
-		  || ( sys-freebsd/freebsd-pam-modules sys-netbsd/netbsd-pam-modules )
-		)
-	)
-	cracklib? ( >=sys-libs/pam-0.99[cracklib] )
-	consolekit? ( >=sys-auth/consolekit-0.3[pam] )
-	gnome-keyring? ( >=gnome-base/gnome-keyring-2.20[pam] )
-	selinux? ( >=sys-libs/pam-0.99[selinux] )
-	passwdqc? ( >=sys-auth/pam_passwdqc-1.0.4 )
-	mktemp? ( sys-auth/pam_mktemp )
-	pam_ssh? ( sys-auth/pam_ssh )
-	sha512? ( >=sys-libs/pam-1.0.1 )
-	pam_krb5? (
-		>=sys-libs/pam-1.1.0
-		>=sys-auth/pam_krb5-4.3
-	)
-	!<sys-freebsd/freebsd-pam-modules-6.2-r1
-	!<sys-libs/pam-0.99.9.0-r1"
-DEPEND="app-portage/portage-utils"
-
-src_prepare() {
-	epatch "${FILESDIR}"/${P}-disable-nullok.patch
-}
-
-src_compile() {
-	local implementation=
-	local linux_pam_version=
-	if has_version sys-libs/pam; then
-		implementation="linux-pam"
-		local ver_str=$(qatom `best_version sys-libs/pam` | cut -d ' ' -f 3)
-		linux_pam_version=$(printf "0x%02x%02x%02x" ${ver_str//\./ })
-	elif has_version sys-auth/openpam; then
-		implementation="openpam"
-	else
-		die "PAM implementation not identified"
-	fi
-
-	use_var() {
-		local varname=$(echo $1 | tr [a-z] [A-Z])
-		local usename=${2-$(echo $1 | tr [A-Z] [a-z])}
-		local varvalue=$(use $usename && echo yes || echo no)
-		echo "${varname}=${varvalue}"
-	}
-
-	emake \
-		GIT=true \
-		$(use_var debug) \
-		$(use_var cracklib) \
-		$(use_var passwdqc) \
-		$(use_var consolekit) \
-		$(use_var GNOME_KEYRING gnome-keyring) \
-		$(use_var selinux) \
-		$(use_var mktemp) \
-		$(use_var PAM_SSH pam_ssh) \
-		$(use_var sha512) \
-		$(use_var KRB5 pam_krb5) \
-		$(use_var minimal) \
-		IMPLEMENTATION=${implementation} \
-		LINUX_PAM_VERSION=${linux_pam_version}
-}
-
-src_test() { :; }
-
-src_install() {
-	emake GIT=true DESTDIR="${ED}" install
-}
-
-pkg_postinst() {
-	if use sha512; then
-		elog "Starting from version 20080801, pambase optionally enables"
-		elog "SHA512-hashed passwords. For this to work, you need sys-libs/pam-1.0.1"
-		elog "built against sys-libs/glibc-2.7 or later."
-		elog "If you don't have support for this, it will automatically fallback"
-		elog "to MD5-hashed passwords, just like before."
-		elog
-		elog "Please note that the change only affects the newly-changed passwords"
-		elog "and that SHA512-hashed passwords will not work on earlier versions"
-		elog "of glibc or Linux-PAM."
-	fi
-}