drm/xen: remove redundant initialization info print

drm_dev_register() already prints the same information on successful
init. Remove the redundant prints.

Acked-by: Alex Deucher <[e-mail]>
Reviewed-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Javier Martinez Canillas <[e-mail]>
Reviewed-by: Jacek Lawrynowicz <[e-mail]>
Acked-by: Jeffrey Hugo <[e-mail]>
Acked-by: Simon Ser <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/900[e-mail]
Signed-off-by: Jani Nikula <[e-mail]>

drivers/gpu/drm/xen/xen_drm_front.c

···
 	if (ret)
 		goto fail_register;
 
-	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
-		 xen_drm_driver.name, xen_drm_driver.major,
-		 xen_drm_driver.minor, xen_drm_driver.patchlevel,
-		 xen_drm_driver.date, drm_dev->primary->index);
-
 	return 0;
 
 fail_register: