arm: mvebu: Remove old comments from configs/mvebu_armada-37xx.h file

These comments are relict for old, now removed config options.
So remove these obsoleted comments too.
Signed-off-by: NPali Rohár <pali@kernel.org>
Reviewed-by: NStefan Roese <sr@denx.de>

include/configs/mvebu_armada-37xx.h

@@ -17,8 +17,6 @@
 
 #define CONFIG_SYS_BOOTM_LEN	SZ_64M /* Increase max gunzip size */
 
-/* auto boot */
-
 #define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, \
 					  115200, 230400, 460800, 921600 }
 
@@ -57,11 +55,8 @@
 /*
  * SPI Flash configuration
  */
-
 #define CONFIG_MTD_PARTITIONS		/* required for UBI partition support */
 
-/* Environment in SPI NOR flash */
-
 /*
  * Ethernet Driver configuration
  */
@@ -70,8 +65,6 @@
 
 #define CONFIG_USB_MAX_CONTROLLER_COUNT (3 + 3)
 
-/* USB ethernet */
-
 /*
  * SATA/SCSI/AHCI configuration
  */