ACPI: scan: Drop outdated comment regarding removed function

The function acpi_video_get_capabilities() was removed from
drivers/acpi/video_detect.c by commit 87521e1 ("acpi-video-detect:
Rewrite backlight interface selection logic") in 2015.  At the time,
comments about this function were just removed, and no replacement
seemed to be proposed.

Drop the reference to acpi_video_get_capabilities() here as well.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
[ rjw: Subject adjustment, changelog edits ]
Link: https://patch.msgid.link/20251230160644.100439-1-Julia.Lawall@inria.fr
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: JuliaLawall

drivers/acpi/scan.c

@@ -1295,8 +1295,6 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
  * The device will get a Linux specific CID added in scan.c to
  * identify the device as an ACPI graphics device
  * Be aware that the graphics device may not be physically present
- * Use acpi_video_get_capabilities() to detect general ACPI video
- * capabilities of present cards
  */
 long acpi_is_video_device(acpi_handle handle)
 {