diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.3.0-r4.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.3.0-r4.ebuild
deleted file mode 100644
index 4cdc6203e3..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-4.3.0-r4.ebuild
+++ /dev/null
@@ -1,9 +0,0 @@
-# Copyright 2014 CoreOS, Inc.
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=5
-COREOS_SOURCE_REVISION="-r1"
-inherit coreos-kernel
-
-DESCRIPTION="CoreOS Linux kernel"
-KEYWORDS="amd64 arm64"