maintainers: remove pesterhazy

Their last commit was caf43ad5af9 from 2015.
Thank you for your contributions.

maintainers/maintainer-list.nix

···
     githubId = 152312;
     name = "Periklis Tsirakidis";
   };
-  pesterhazy = {
-    email = "[e-mail]";
-    github = "pesterhazy";
-    githubId = 106328;
-    name = "Paulus Esterhazy";
-  };
   petabyteboy = {
     email = "[e-mail]";
     github = "petabyteboy";

pkgs/applications/misc/jekyll/default.nix

···
     homepage    = "https://jekyllrb.com/";
     #changelog   = "https://raw.githubusercontent.com/jekyll/jekyll/v${version}/History.markdown";
     license     = licenses.mit;
-    maintainers = with maintainers; [ pesterhazy ];
+    maintainers = with maintainers; [ ];
     platforms   = platforms.unix;
   };
 }

pkgs/development/libraries/oracle-instantclient/default.nix

···
     '';
     license = licenses.unfree;
     platforms = [ "x86_64-linux" "x86_64-darwin" ];
-    maintainers = with maintainers; [ pesterhazy flokli ];
+    maintainers = with maintainers; [ flokli ];
     hydraPlatforms = [];
   };
 }

pkgs/development/libraries/sqlite/tools.nix

···
       inherit description homepage;
       downloadPage = http://sqlite.org/download.html;
       license = licenses.publicDomain;
-      maintainers = with maintainers; [ pesterhazy johnazoidberg ];
+      maintainers = with maintainers; [ johnazoidberg ];
       platforms = platforms.unix;
     };
   };