common/cmd_[af]*: Remove obsolete references to CONFIG_COMMANDS.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/common/cmd_cache.c b/common/cmd_cache.c
index 29ca621..6890faf 100644
--- a/common/cmd_cache.c
+++ b/common/cmd_cache.c
@@ -27,7 +27,7 @@
 #include <common.h>
 #include <command.h>
 
-#if (CONFIG_COMMANDS & CFG_CMD_CACHE) || defined(CONFIG_CMD_CACHE)
+#if defined(CONFIG_CMD_CACHE)
 
 static int on_off (const char *);