MAINTAINERS: remove defunct acpi4asus project info from asus notebooks section

The acpi4asus project appears to be defunct, according to:
https://sourceforge.net/p/acpi4asus/mailman/acpi4asus-user/
the last posts to the list were done in May 2020 and even then
they were mostly spam.

And the http://acpi4asus.sf.net website still talks about 2.6.x kernels.

Drop the defunct mailing-list and update the W: entry to point to
the new up2date https://asus-linux.org/ site.

Cc: Corentin Chary <corentin.chary@gmail.com>
Cc: Luke D. Jones <luke@ljones.dev>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

MAINTAINERS

@@ -3169,10 +3169,9 @@ F:	drivers/hwmon/asus-ec-sensors.c
 ASUS NOTEBOOKS AND EEEPC ACPI/WMI EXTRAS DRIVERS
 M:	Corentin Chary <corentin.chary@gmail.com>
 M:	Luke D. Jones <luke@ljones.dev>
-L:	acpi4asus-user@lists.sourceforge.net
 L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
-W:	http://acpi4asus.sf.net
+W:	https://asus-linux.org/
 F:	drivers/platform/x86/asus*.c
 F:	drivers/platform/x86/eeepc*.c