DEVELOPERS: remove myself for aufs

Aufs has been deprecated for the purposes of Docker/containers since overlay2
became the mainline kernel module of choice.

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 8a99b47ec2606141560ddba769ad8d1d35baf252)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -517,9 +517,6 @@ N:	Christian Kellermann <christian.kellermann@solectrix.de>
 F:	package/python-pylibftdi/
 
 N:	Christian Stewart <christian@paral.in>
-F:	linux/linux-ext-aufs.mk
-F:	package/aufs/
-F:	package/aufs-util/
 F:	package/batman-adv/
 F:	package/docker-cli/
 F:	package/docker-containerd/