Fix some compile problems introduced by the latest CFG_CMD_xxx cleanup

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/net/sntp.c b/net/sntp.c
index 0a7f478..95e7542 100644
--- a/net/sntp.c
+++ b/net/sntp.c
@@ -12,8 +12,7 @@
 
 #include "sntp.h"
 
-#if (defined(CONFIG_CMD_NET) \
-    && defined(CONFIG_CMD_SNTP)
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_CMD_SNTP)
 
 #define SNTP_TIMEOUT 10