staging: keucr: remove driver

The driver hasn't been fully cleaned up and it doesn't look like anyone
is working on it anymore (including the original author). So remove the
driver and all references to it. If someone wants to finish cleaning
the driver up and moving it out of staging, this commit can be reverted.

Signed-off-by: Kristina Martšenko <kristina.martsenko@gmail.com>
Cc: Cho, Yu-Chen <acho@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index 13b5bfb..9a26242 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -193,7 +193,7 @@
 	depends on USB_STORAGE
 	---help---
 	  Say Y here if you wish to control a ENE SD/MS Card reader.
-	  To use SM card, please build driver/staging/keucr/keucr.ko
+	  Note that this driver does not support SM cards.
 
 	  This option depends on 'SCSI' support being enabled, but you
 	  probably also need 'SCSI device support: SCSI disk support'