Unmaintain a few packages

pkgs/servers/mail/dovecot/default.nix

@@ -84,7 +84,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = "https://dovecot.org/";
     description = "Open source IMAP and POP3 email server written with security primarily in mind";
-    maintainers = with stdenv.lib.maintainers; [ peti rickynils fpletz globin ];
+    maintainers = with stdenv.lib.maintainers; [ peti fpletz globin ];
     platforms = stdenv.lib.platforms.unix;
   };
   passthru.tests = {

pkgs/servers/mail/dovecot/plugins/pigeonhole/default.nix

@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
     homepage = "http://pigeonhole.dovecot.org/";
     description = "A sieve plugin for the Dovecot IMAP server";
     license = licenses.lgpl21;
-    maintainers = with maintainers; [ rickynils globin ];
+    maintainers = with maintainers; [ globin ];
     platforms = platforms.unix;
   };
 }

pkgs/servers/mail/opensmtpd/default.nix

@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
     '';
     license = licenses.isc;
     platforms = platforms.linux;
-    maintainers = with maintainers; [ rickynils obadz ekleog ];
+    maintainers = with maintainers; [ obadz ekleog ];
   };
   passthru.tests = {
     basic-functionality-and-dovecot-interaction = nixosTests.opensmtpd;

pkgs/servers/mail/postfix/default.nix

@@ -101,7 +101,7 @@ in stdenv.mkDerivation rec {
     description = "A fast, easy to administer, and secure mail server";
     license = with licenses; [ ipl10 epl20 ];
     platforms = platforms.linux;
-    maintainers = with maintainers; [ rickynils globin ];
+    maintainers = with maintainers; [ globin ];
   };
 
 }