ARM: drop unsupported 'trab' board

The 'trab' board configuration is broken, and there is nobody who is
interested and willing to fix it.  Drop it.

This includes support for VFD displays which have always been used by
this board only.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/README b/README
index 8bb9c8d..446966d 100644
--- a/README
+++ b/README
@@ -716,7 +716,6 @@
 		CONFIG_CMD_SPI		* SPI serial bus support
 		CONFIG_CMD_TFTPSRV	* TFTP transfer in server mode
 		CONFIG_CMD_USB		* USB support
-		CONFIG_CMD_VFD		* VFD support (TRAB)
 		CONFIG_CMD_CDP		* Cisco Discover Protocol support
 		CONFIG_CMD_FSL		* Microblaze FSL support
 
@@ -2230,7 +2229,7 @@
 Modem Support:
 --------------
 
-[so far only for SMDK2400 and TRAB boards]
+[so far only for SMDK2400 boards]
 
 - Modem support enable:
 		CONFIG_MODEM_SUPPORT