s390/cio: remove unused ccw_device_force_console() declaration

ccw_device_force_console() has been removed by
commit 8cc0dcfd ("s390/cio: remove pm support from
ccw bus driver"), so remove the declaration, too.
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/include/asm/ccwdev.h

@@ -214,7 +214,6 @@ extern struct ccw_device *ccw_device_create_console(struct ccw_driver *);
 extern void ccw_device_destroy_console(struct ccw_device *);
 extern int ccw_device_enable_console(struct ccw_device *);
 extern void ccw_device_wait_idle(struct ccw_device *);
-extern int ccw_device_force_console(struct ccw_device *);
 
 extern void *ccw_device_dma_zalloc(struct ccw_device *cdev, size_t size);
 extern void ccw_device_dma_free(struct ccw_device *cdev,