nixos: finish bump to 20.03 including home-manager

nix/os/devices/steveej-t480s-work/system.nix

@@ -53,15 +53,6 @@ in {
   virtualisation = {
     libvirtd = {
       enable = true;
-      extraOptions = [
-        "--listen"
-      ];
-      extraConfig = ''
-        listen_tls = 0
-        listen_tcp = 1
-        auth_tcp="none"
-        tcp_port = "16509"
-      '';
     };
 
     virtualbox.host = {

nix/os/devices/steveej-t480s-work/versions.nix

@@ -1,20 +1,20 @@
 {
   channelsNixosStable = {
     ref = "nixos-20.03";
-    rev = "48723f48ab92381f0afd50143f38e45cf3080405";
+    rev = "70717a337f7ae4e486ba71a500367cad697e5f09";
   };
   channelsNixosUnstable = {
     ref = "nixos-unstable";
-    rev = "0f5ce2fac0c726036ca69a5524c59a49e2973dd4";
+    rev = "029a5de08390bb03c3f44230b064fd1850c6658a";
   };
   nixpkgsMaster = {
     url = "https://github.com/NixOS/nixpkgs/";
     ref = "master";
-    rev = "7fe32a614abfd6d6afacb27d8e7c99fb6f9e41b7";
+    rev = "ba5ace74d447bab0e0df06cb9471df8421d61026";
   };
   homeManagerModule = {
     url = "https://github.com/rycee/home-manager";
-    ref = "release-19.09";
-    rev = "b78b5fa4a073dfcdabdf0deb9a8cfd56050113be";
+    ref = "release-20.03";
+    rev = "96fcf3b017d813fac300ecb821b6db6b7b5d0c40";
   };
 }