Update/clean up openssh users

Change-Id: Idc824eb5d3d185fdafb414d0be8080501c2b4456
diff --git a/openssh/server/team/security.yml b/openssh/server/team/security.yml
index e165ce1..d914fdc 100644
--- a/openssh/server/team/security.yml
+++ b/openssh/server/team/security.yml
@@ -1,7 +1,7 @@
 classes:
 - system.linux.system.sudo
 - system.openssh.server.team.members.ahecko
-- system.openssh.server.team.members.pmichalec
+- system.openssh.server.team.members.deprecated.pmichalec
 parameters:
   _param:
     linux_system_user_sudo: true