Remove Lifeng from Uploaders (Closes: #925012)

debian/changelog

+lablgl (1:1.06-2) UNRELEASED; urgency=medium
+
+  * Remove Lifeng from Uploaders (Closes: #925012)
+
+ -- Stéphane Glondu <glondu@debian.org>  Thu, 08 Aug 2019 09:22:13 +0200
+
 lablgl (1:1.06-1) unstable; urgency=medium
 
   * New upstream release

debian/control

@@ -5,8 +5,7 @@ Maintainer: Debian OCaml Maintainers <debian-ocaml-maint@lists.debian.org>
 Uploaders:
  Stéphane Glondu <glondu@debian.org>,
  Mehdi Dogguy <mehdi@debian.org>,
- Ralf Treinen <treinen@debian.org>,
- Lifeng Sun <lifongsun@gmail.com>
+ Ralf Treinen <treinen@debian.org>
 Build-Depends:
  debhelper (>= 12),
  ocaml (>= 4.00.1),