diff --git a/sdk_container/src/third_party/coreos-overlay/coreos/config/env/dev-util/dialog b/sdk_container/src/third_party/coreos-overlay/coreos/config/env/dev-util/dialog
deleted file mode 100644
index 299e72433e..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/coreos/config/env/dev-util/dialog
+++ /dev/null
@@ -1,7 +0,0 @@
-# The CF_NCURSES_CONFIG m4 helper from ncurses needs to be migrated from
-# AC_PATH_PROGS to AC_CHECK_TOOLS.  But that'll take a while to filter
-# throughout the ecosystem ...
-cros_pre_src_configure_ncurses_config() {
-	[[ $(cros_target) != "board_sysroot" ]] && return 0
-	export ac_cv_path_NCURSES_CONFIG=${CROS_BUILD_BOARD_BIN}/${CHOST}-ncurses5-config
-}