Remove bad server.scheduleOnMain disconnect calls from old patches

The new behavior of disconnect to block the current thread until the disconnect succeeded is better than throwing it off to happen at some point

patches/server/0818-Fix-demo-flag-not-enabling-demo-mode.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Warrior <50800980+Warriorrrr@users.noreply.github.com>
+Date: Fri, 7 Apr 2023 20:11:17 +0200
+Subject: [PATCH] Fix demo flag not enabling demo mode
+
+https://github.com/PaperMC/Paper/issues/9046
+
+diff --git a/src/main/java/net/minecraft/server/Main.java b/src/main/java/net/minecraft/server/Main.java
+index 13e1a914d4523f1c192db2a9a1ee6522e0ee27da..c33f85b570f159ab465b5a10a8044a81f2797f43 100644
+--- a/src/main/java/net/minecraft/server/Main.java
++++ b/src/main/java/net/minecraft/server/Main.java
+@@ -325,7 +325,9 @@ public class Main {
+ 
+                 /*
+                 dedicatedserver1.setPort((Integer) optionset.valueOf(optionspec11));
+-                dedicatedserver1.setDemo(optionset.has(optionspec2));
++                */
++                dedicatedserver1.setDemo(optionset.has("demo")); // Paper
++                /*
+                 dedicatedserver1.setId((String) optionset.valueOf(optionspec12));
+                 */
+                 boolean flag2 = !optionset.has("nogui") && !optionset.nonOptionArguments().contains("nogui");