MAINTAINERS: PKTCDVD DRIVER: remove entry for a subscribers-only list

This patch was already ACK'ed by Peter Osterlund.
diff --git a/MAINTAINERS b/MAINTAINERS
index 995bfd8..3028d4b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1970,7 +1970,6 @@
 P:	Peter Osterlund
 M:	petero2@telia.com
 L:	linux-kernel@vger.kernel.org
-L:	packet-writing@suse.com
 S:	Maintained
 
 POSIX CLOCKS and TIMERS