staging: unisys: visorbus: Removed unused define from visorbus_main.c

Removed unused #define CURRENT_FILE_PC.

Signed-off-by: Mark Foresta <Mark.Foresta@Unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: David Binder <david.binder@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>