Increase connections

- Use the default value of `256 * 1024` for the concurrency limit, this
will mean that the server will be able to handle more connections.

server/setup.go

@@ -21,7 +21,6 @@ func SetupServer(handler fasthttp.RequestHandler) *fasthttp.Server {
 		NoDefaultServerHeader:        true,
 		NoDefaultDate:                true,
 		ReadTimeout:                  30 * time.Second, // needs to be this high for ACME certificates with ZeroSSL & HTTP-01 challenge
-		Concurrency:                  1024 * 32,        // TODO: adjust bottlenecks for best performance with Gitea!
 	}
 }