net/: Remove obsolete references to CONFIG_COMMANDS

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/net/bootp.h b/net/bootp.h
index 8e52aec..ba9826e 100644
--- a/net/bootp.h
+++ b/net/bootp.h
@@ -18,7 +18,7 @@
 /*
  *	BOOTP header.
  */
-#if (CONFIG_COMMANDS & CFG_CMD_DHCP) || defined(CONFIG_CMD_DHCP)
+#if defined(CONFIG_CMD_DHCP)
 #define OPT_SIZE 312	/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
 #else
 #define OPT_SIZE 64