MAINTAINERS: Drop Wanpeng Li as a Reviewer for KVM Paravirt support

Drop Wanpeng as a KVM PARAVIRT reviewer as his @tencent.com email is
bouncing, and according to lore[*], the last activity from his @gmail.com
address was almost two years ago.

[*] https://lore.kernel.org/all/CANRm+Cwj29M9HU3=JRUOaKDR+iDKgr0eNMWQi0iLkR5THON-bg@mail.gmail.com

Cc: Wanpeng Li <kernellwp@gmail.com>
Cc: Like Xu <like.xu.linux@gmail.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20240610163427.3359426-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Author: sean-jc

MAINTAINERS

@@ -12383,7 +12383,6 @@ F:	drivers/video/backlight/ktz8866.c
 
 KVM PARAVIRT (KVM/paravirt)
 M:	Paolo Bonzini <pbonzini@redhat.com>
-R:	Wanpeng Li <wanpengli@tencent.com>
 R:	Vitaly Kuznetsov <vkuznets@redhat.com>
 L:	kvm@vger.kernel.org
 S:	Supported