MAINTAINERS: Remove Perry Yuan as DELL WMI HARDWARE PRIVACY SUPPORT maintainer

Recent mails to his Dell address bounced with "user unknown".
So remove him as maintainer.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/c9757d0a-2046-464b-93e1-a2d9ab0ce36b@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

MAINTAINERS

@@ -5958,7 +5958,6 @@ S:	Maintained
 F:	drivers/platform/x86/dell/dell-wmi-descriptor.c
 
 DELL WMI HARDWARE PRIVACY SUPPORT
-M:	Perry Yuan <Perry.Yuan@dell.com>
 L:	Dell.Client.Kernel@dell.com
 L:	platform-driver-x86@vger.kernel.org
 S:	Maintained