staging: unisys: include: remove io.h from channel.h

Channel.h was including io.h and not using it. Remove the #include.
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/include/channel.h

@@ -18,7 +18,6 @@
 #define __CHANNEL_H__
 
 #include <linux/types.h>
-#include <linux/io.h>
 #include <linux/uuid.h>
 
 #define SIGNATURE_16(A, B) ((A) | ((B) << 8))