Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"

This reverts commit e37f14a5.

It turned out other systems also share the same problem with bug 63111
so I made a patch to catch initial brightness level 0 problem. With that
patch applied, we do not need to place HP 250 G1 in DMI table.

References: https://bugzilla.kernel.org/show_bug.cgi?id=63111


Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>