usb: remove libusual

The "Low Performance USB Block driver" has been removed which a user of
libusual. Now we have only the usb-storage driver as the only driver in
tree. This makes libusual needless.
This patch removes libusal, fixes up all users. The usual-table is now
linked into usb-storage.
usb_usual.h remains in public include directory because some staging
users seem to need it.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/storage/Makefile

@@ -12,16 +12,9 @@ obj-$(CONFIG_USB_STORAGE)	+= usb-storage.o
 
 usb-storage-y := scsiglue.o protocol.o transport.o usb.o
 usb-storage-y += initializers.o sierra_ms.o option_ms.o
-
+usb-storage-y += usual-tables.o
 usb-storage-$(CONFIG_USB_STORAGE_DEBUG) += debug.o
 
-ifeq ($(CONFIG_USB_LIBUSUAL),)
-	usb-storage-y		+= usual-tables.o
-else
-	obj-$(CONFIG_USB)	+= usb-libusual.o
-	usb-libusual-y		:= libusual.o usual-tables.o
-endif
-
 obj-$(CONFIG_USB_STORAGE_ALAUDA)	+= ums-alauda.o
 obj-$(CONFIG_USB_STORAGE_CYPRESS_ATACB) += ums-cypress.o
 obj-$(CONFIG_USB_STORAGE_DATAFAB)	+= ums-datafab.o