treewide: remove cburstedde as maintainer (#422439)

maintainers/maintainer-list.nix

@@ -4279,13 +4279,6 @@
     githubId = 9086315;
     name = "Connor Brewster";
   };
-  cburstedde = {
-    email = "burstedde@ins.uni-bonn.de";
-    github = "cburstedde";
-    githubId = 109908;
-    name = "Carsten Burstedde";
-    keys = [ { fingerprint = "1127 A432 6524 BF02 737B  544E 0704 CD9E 550A 6BCD"; } ];
-  };
   ccellado = {
     email = "annplague@gmail.com";
     github = "ccellado";

pkgs/by-name/pe/petsc/package.nix

@@ -305,9 +305,6 @@ stdenv.mkDerivation (finalAttrs: {
     homepage = "https://petsc.org/release/";
     license = lib.licenses.bsd2;
     platforms = lib.platforms.unix;
-    maintainers = with lib.maintainers; [
-      cburstedde
-      qbisi
-    ];
+    maintainers = with lib.maintainers; [ qbisi ];
   };
 })

pkgs/development/libraries/science/math/p4est-sc/default.nix

@@ -73,6 +73,6 @@ stdenv.mkDerivation {
     homepage = "https://www.p4est.org/";
     downloadPage = "https://github.com/cburstedde/libsc.git";
     license = lib.licenses.lgpl21Plus;
-    maintainers = [ lib.maintainers.cburstedde ];
+    maintainers = [ ];
   };
 }

pkgs/development/libraries/science/math/p4est/default.nix

@@ -72,6 +72,6 @@ stdenv.mkDerivation {
     homepage = "https://www.p4est.org/";
     downloadPage = "https://github.com/cburstedde/p4est.git";
     license = lib.licenses.gpl2Plus;
-    maintainers = [ lib.maintainers.cburstedde ];
+    maintainers = [ ];
   };
 }