USB: serial: ir-usb.c: remove debug module parameter

Now that the dbg() macro is no longer being used in the driver,
the debug module parameter doesn't do anything at all.  So remove
it so as to not confuse people.

CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Johan Hovold <jhovold@gmail.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/ir-usb.c

@@ -45,8 +45,6 @@
 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Johan Hovold <jhovold@gmail.com>"
 #define DRIVER_DESC "USB IR Dongle driver"
 
-static bool debug;
-
 /* if overridden by the user, then use their value for the size of the read and
  * write urbs */
 static int buffer_size;
@@ -457,8 +455,6 @@ MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
 
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
 module_param(xbof, int, 0);
 MODULE_PARM_DESC(xbof, "Force specific number of XBOFs");
 module_param(buffer_size, int, 0);