busybox: remove obsolete overlay code and moved config snaps to pkg_conf/busybox

pkg_conf/busybox.conf

@@ -13,17 +13,7 @@
 # GNU General Public License can be found in the file COPYING.
 # --- SDE-COPYRIGHT-NOTE-END ---
 
-BB_MNEMOSYNE_DIR="$base/target/$SDECFG_TRG_MNEMOSYNE/busybox"
-
-bb_mnemosyne_overlay=
-bb_mnemosyne_overlay_apply()
-{
-	local x=
-	for x in $bb_mnemosyne_overlay; do
-		overlay_apply "$x"
-	done
-}
-hook_add postdoc 5 'bb_mnemosyne_overlay_apply'
+BB_MNEMOSYNE_DIR="$base/target/$SDECFG_TRG_MNEMOSYNE/pkg_conf/busybox"
 
 bb_mnemosyne_append()
 {
@@ -33,10 +23,6 @@ bb_mnemosyne_append()
 		# busybox config settings
 		y="$BB_MNEMOSYNE_DIR/$x.config"
 		[ ! -s "$y" ] || var_append conffiles ' ' "$y"
-
-		# overlay directories
-		y="$BB_MNEMOSYNE_DIR/$x"
-		[ ! -d "$y/" ] || var_append bb_mnemosyne_overlay ' ' "$y"
 	done
 }