Doppeltes Inherit geloescht.

Change-Id: I4c1eeb397fb03398151802dffab7fedc71fffdde
diff --git a/std/tray.c b/std/tray.c
index 2ee8511..3f5aebb 100644
--- a/std/tray.c
+++ b/std/tray.c
@@ -27,7 +27,6 @@
 inherit "/std/container/items";
 inherit "/std/tray/description";
 inherit "/std/thing/envchk";
-inherit "/std/container/items";
 
 #include <properties.h>
 #include <wizlevels.h>