treewide: remove redundant quotes

nixos/modules/services/web-apps/restya-board.nix

@@ -179,7 +179,7 @@ in
   config = mkIf cfg.enable {
 
     services.phpfpm.pools = {
-      "${poolName}" = {
+      ${poolName} = {
         listen = phpfpmSocketName;
         phpOptions = ''
           date.timezone = "CET"
@@ -209,7 +209,7 @@ in
     };
 
     services.nginx.enable = true;
-    services.nginx.virtualHosts."${cfg.virtualHost.serverName}" = {
+    services.nginx.virtualHosts.${cfg.virtualHost.serverName} = {
       listen = [ { addr = cfg.virtualHost.listenHost; port = cfg.virtualHost.listenPort; } ];
       serverName = cfg.virtualHost.serverName;
       root = runDir;