treewide: remove the-kenny from maintainers

@the-kenny did a good job in the past and is set as maintainer in many package,
however since 2017-2018 he stopped contributing. To create less confusion
in pull requests when people try to request his feedback, I removed him as
maintainer from all packages.

pkgs/applications/version-management/git-and-tools/svn2git/default.nix

@@ -34,8 +34,6 @@ stdenv.mkDerivation {
     homepage = "https://github.com/nirvdrum/svn2git";
     description = "Tool for importing Subversion repositories into git";
     license = stdenv.lib.licenses.mit;
-
-    maintainers = [ stdenv.lib.maintainers.the-kenny ];
     platforms = stdenv.lib.platforms.unix;
   };
 }