Revert "Merge pull request 'clanModules: Init nginx module. matrix-synapse: don't assume domain names' (#1906) from Qubasa/clan-core:Qubasa-new-main into main"

This reverts commit b29f649343, reversing
changes made to 9c8be387fa.

Apparently this breaks assumptions about matrix: https://git.clan.lol/clan/clan-core/pulls/1906#issuecomment-13184

clanModules/dyndns/default.nix

@@ -143,7 +143,6 @@ in
       "dyndns"
       "enable"
     ] "Just define clan.dyndns.settings to enable it")
-    ../nginx
   ];
 
   config = lib.mkMerge [
@@ -159,6 +158,11 @@ in
         createHome = true;
       };
 
+      networking.firewall.allowedTCPPorts = lib.mkIf cfg.server.enable [
+        80
+        443
+      ];
+
       services.nginx = lib.mkIf cfg.server.enable {
         enable = true;
         virtualHosts = {
@@ -245,6 +249,7 @@ in
             PrivateDevices = "yes";
             ProtectKernelModules = "yes";
             ProtectKernelTunables = "yes";
+
             WorkingDirectory = "/var/lib/${name}";
             ReadWritePaths = [
               "/proc/self"