modules: system: remove 'media'

It was not the idiomatic way to do this.

modules/services/calibre-web.nix

@@ -37,6 +37,9 @@ in
       };
     };
 
+    # Set-up media group
+    users.groups.media = { };
+
     my.services.nginx.virtualHosts = [
       {
         subdomain = "library";

modules/services/jellyfin.nix

@@ -14,6 +14,9 @@ in
       group = "media";
     };
 
+    # Set-up media group
+    users.groups.media = { };
+
     my.services.nginx.virtualHosts = [
       {
         subdomain = "jellyfin";

modules/services/paperless.nix

@@ -93,6 +93,9 @@ in
       ];
     };
 
+    # Set-up media group
+    users.groups.media = { };
+
     systemd.services.paperless-ng-server = {
       # Make sure the DB is available
       after = [ "postgresql.service" ];

modules/services/pirate.nix

@@ -32,5 +32,7 @@ in
   config = lib.mkIf cfg.enable {
     services = managers;
     my.services.nginx.virtualHosts = redirections;
+    # Set-up media group
+    users.groups.media = { };
   };
 }

modules/services/sabnzbd.nix

@@ -15,6 +15,9 @@ in
       group = "media";
     };
 
+    # Set-up media group
+    users.groups.media = { };
+
     my.services.nginx.virtualHosts = [
       {
         subdomain = "sabnzbd";

modules/services/transmission.nix

@@ -72,6 +72,9 @@ in
       };
     };
 
+    # Set-up media group
+    users.groups.media = { };
+
     # Default transmission webui, I prefer combustion but its development
     # seems to have stalled
     my.services.nginx.virtualHosts = [