port Significantly improve performance of the end generation (#7919)

patches/server/0641-Add-environment-variable-to-disable-server-gui.patch

@@ -1,18 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Riley Park <riley.park@meino.net>
-Date: Mon, 17 May 2021 00:34:55 -0700
-Subject: [PATCH] Add environment variable to disable server gui
-
-
-diff --git a/src/main/java/net/minecraft/server/Main.java b/src/main/java/net/minecraft/server/Main.java
-index 8bbc3a1e7f848047ff915d5bdf08d376e71c4025..ce4aed84d751a48dcd2a8409190db4a22d78f77b 100644
---- a/src/main/java/net/minecraft/server/Main.java
-+++ b/src/main/java/net/minecraft/server/Main.java
-@@ -267,6 +267,7 @@ public class Main {
-                 */
-                 boolean flag1 = !optionset.has("nogui") && !optionset.nonOptionArguments().contains("nogui");
- 
-+                if(!Boolean.parseBoolean(System.getenv().getOrDefault("PAPER_DISABLE_SERVER_GUI", String.valueOf(false)))) // Paper
-                 if (flag1 && !GraphicsEnvironment.isHeadless()) {
-                     dedicatedserver1.showGui();
-                 }