kirkwood: sheevaplug: fix multiple defines

Signed-off-by: Gérald Kerma <drEagle@doukki.net>
Reviewed-by: Luka Perkov <luka.perkov@sartura.hr>

include/configs/sheevaplug.h

@@ -142,6 +142,5 @@
 #define CONFIG_MTD_DEVICE               /* needed for mtdparts commands */
 #define CONFIG_MTD_PARTITIONS
 #define CONFIG_CMD_MTDPARTS
-#define CONFIG_LZO
 
 #endif /* _CONFIG_SHEEVAPLUG_H */