Remove myself from Uploaders

I've mostly retired from GRUB maintenance since early 2022, so I think
it would be better if I weren't listed as an uploader in bookworm.
Thanks to Steve and Julian for picking up the torch!

debian/changelog

@@ -20,6 +20,9 @@ grub2 (2.06-8) UNRELEASED; urgency=medium
   * Ignore some new ext2 flags to stay compatible with latest mke2fs
     defaults. Closes: #1030846
 
+  [ Colin Watson ]
+  * Remove myself from Uploaders.
+
  -- Steve McIntyre <93sam@debian.org>  Wed, 08 Feb 2023 21:13:23 +0000
 
 grub2 (2.06-7) unstable; urgency=medium

debian/control

@@ -2,7 +2,7 @@ Source: grub2
 Section: admin
 Priority: optional
 Maintainer: GRUB Maintainers <pkg-grub-devel@alioth-lists.debian.net>
-Uploaders: Felix Zielcke <fzielcke@z-51.de>, Jordi Mallach <jordi@debian.org>, Colin Watson <cjwatson@debian.org>, Steve McIntyre <93sam@debian.org>, Julian Andres Klode <jak@debian.org>
+Uploaders: Felix Zielcke <fzielcke@z-51.de>, Jordi Mallach <jordi@debian.org>, Steve McIntyre <93sam@debian.org>, Julian Andres Klode <jak@debian.org>
 Build-Depends: debhelper-compat (= 13),
  patchutils,
  python3,