board/[q-z]*: Remove obsolete references to CONFIG_COMMANDS

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/board/xilinx/ml300/serial.c b/board/xilinx/ml300/serial.c
index e4b743a..09a3dc3 100644
--- a/board/xilinx/ml300/serial.c
+++ b/board/xilinx/ml300/serial.c
@@ -122,7 +122,7 @@
 	}
 }
 
-#if (CONFIG_COMMANDS & CFG_CMD_KGDB) || defined(CONFIG_CMD_KGDB)
+#if defined(CONFIG_CMD_KGDB)
 void
 kgdb_serial_init(void)
 {