diff --git a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.11.6.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.11.6.ebuild
deleted file mode 100644
index b1fb5f1925..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.11.6.ebuild
+++ /dev/null
@@ -1,8 +0,0 @@
-# Copyright 2018 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-inherit coreos-go-lang
-
-KEYWORDS="-* amd64 arm64"
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.5.4-r2.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.5.4-r2.ebuild
deleted file mode 100644
index 9e35e2c821..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.5.4-r2.ebuild
+++ /dev/null
@@ -1,9 +0,0 @@
-# Copyright 2016 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-# $Id$
-
-EAPI=6
-
-inherit coreos-go-lang
-
-KEYWORDS="-* amd64 arm64"
diff --git a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.9.7.ebuild b/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.9.7.ebuild
deleted file mode 100644
index f77ad2ce2b..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/dev-lang/go/go-1.9.7.ebuild
+++ /dev/null
@@ -1,8 +0,0 @@
-# Copyright 2017 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-inherit coreos-go-lang
-
-KEYWORDS="-* amd64 arm64"
diff --git a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.11.6 b/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.11.6
deleted file mode 100644
index 0425d89ef3..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.11.6
+++ /dev/null
@@ -1,12 +0,0 @@
-DEFINED_PHASES=compile install postinst postrm pretend test
-DEPEND=app-eselect/eselect-go >=dev-lang/go-bootstrap-1.5.3
-DESCRIPTION=A concurrent garbage collected and typesafe programming language
-EAPI=6
-HOMEPAGE=http://www.golang.org
-KEYWORDS=-* amd64 arm64
-LICENSE=BSD
-RDEPEND=app-eselect/eselect-go
-SLOT=1.11/1.11.6
-SRC_URI=https://storage.googleapis.com/golang/go1.11.6.src.tar.gz
-_eclasses_=coreos-go-lang	5983edbc8ebcd4ee0977c514df5904e2	coreos-go-utils	67004337b6f831adc5f1ff107ee2f157	desktop	b1d22ac8bdd4679ab79c71aca235009d	epatch	a1bf4756dba418a7238f3be0cb010c54	estack	43ddf5aaffa7a8d0482df54d25a66a1f	eutils	6e6c2737b59a4b982de6fb3ecefd87f8	flag-o-matic	55aaa148741116aa54ad0d80e361818e	ltprune	08f9e1d9ee0af8f5d9a7854efbcd8c0e	multilib	b2f01ad412baf81650c23fcf0975fa33	preserve-libs	ef207dc62baddfddfd39a164d9797648	toolchain-funcs	f164325a2cdb5b3ea39311d483988861	vcs-clean	2a0f74a496fa2b1552c4f3398258b7bf	versionator	2352c3fc97241f6a02042773c8287748
-_md5_=62f4876ac7b867a48fadcf7eaebfea17
diff --git a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.5.4-r2 b/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.5.4-r2
deleted file mode 100644
index 8091bbdd6d..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.5.4-r2
+++ /dev/null
@@ -1,12 +0,0 @@
-DEFINED_PHASES=compile install postinst postrm pretend test
-DEPEND=app-eselect/eselect-go >=dev-lang/go-bootstrap-1.5.3
-DESCRIPTION=A concurrent garbage collected and typesafe programming language
-EAPI=6
-HOMEPAGE=http://www.golang.org
-KEYWORDS=-* amd64 arm64
-LICENSE=BSD
-RDEPEND=app-eselect/eselect-go
-SLOT=1.5/1.5.4
-SRC_URI=https://storage.googleapis.com/golang/go1.5.4.src.tar.gz
-_eclasses_=coreos-go-lang	5983edbc8ebcd4ee0977c514df5904e2	coreos-go-utils	67004337b6f831adc5f1ff107ee2f157	desktop	b1d22ac8bdd4679ab79c71aca235009d	epatch	a1bf4756dba418a7238f3be0cb010c54	estack	43ddf5aaffa7a8d0482df54d25a66a1f	eutils	6e6c2737b59a4b982de6fb3ecefd87f8	flag-o-matic	55aaa148741116aa54ad0d80e361818e	ltprune	08f9e1d9ee0af8f5d9a7854efbcd8c0e	multilib	b2f01ad412baf81650c23fcf0975fa33	preserve-libs	ef207dc62baddfddfd39a164d9797648	toolchain-funcs	f164325a2cdb5b3ea39311d483988861	vcs-clean	2a0f74a496fa2b1552c4f3398258b7bf	versionator	2352c3fc97241f6a02042773c8287748
-_md5_=29f76ceada4828394b60460d3163e657
diff --git a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.9.7 b/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.9.7
deleted file mode 100644
index f170ccb4c5..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/metadata/md5-cache/dev-lang/go-1.9.7
+++ /dev/null
@@ -1,12 +0,0 @@
-DEFINED_PHASES=compile install postinst postrm pretend test
-DEPEND=app-eselect/eselect-go >=dev-lang/go-bootstrap-1.5.3
-DESCRIPTION=A concurrent garbage collected and typesafe programming language
-EAPI=6
-HOMEPAGE=http://www.golang.org
-KEYWORDS=-* amd64 arm64
-LICENSE=BSD
-RDEPEND=app-eselect/eselect-go
-SLOT=1.9/1.9.7
-SRC_URI=https://storage.googleapis.com/golang/go1.9.7.src.tar.gz
-_eclasses_=coreos-go-lang	5983edbc8ebcd4ee0977c514df5904e2	coreos-go-utils	67004337b6f831adc5f1ff107ee2f157	desktop	b1d22ac8bdd4679ab79c71aca235009d	epatch	a1bf4756dba418a7238f3be0cb010c54	estack	43ddf5aaffa7a8d0482df54d25a66a1f	eutils	6e6c2737b59a4b982de6fb3ecefd87f8	flag-o-matic	55aaa148741116aa54ad0d80e361818e	ltprune	08f9e1d9ee0af8f5d9a7854efbcd8c0e	multilib	b2f01ad412baf81650c23fcf0975fa33	preserve-libs	ef207dc62baddfddfd39a164d9797648	toolchain-funcs	f164325a2cdb5b3ea39311d483988861	vcs-clean	2a0f74a496fa2b1552c4f3398258b7bf	versionator	2352c3fc97241f6a02042773c8287748
-_md5_=ebb70416fc83e0a99023227fe1a52936