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/0880-Implement-OfflinePlayer-isConnected.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aeltumn <daniel@goossens.ch>
+Date: Thu, 24 Aug 2023 13:05:30 +0200
+Subject: [PATCH] Implement OfflinePlayer#isConnected
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
+index 4d654c4f0b6210a9841427789ba70ce5d1d308be..9d93130f23addb18b97d7f5ec013faef17a74529 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftOfflinePlayer.java
+@@ -54,6 +54,13 @@ public class CraftOfflinePlayer implements OfflinePlayer, ConfigurationSerializa
+         return this.getPlayer() != null;
+     }
+ 
++    // Paper start
++    @Override
++    public boolean isConnected() {
++        return false;
++    }
++    // Paper end
++
+     @Override
+     public String getName() {
+         Player player = this.getPlayer();
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index e4de4ed09b20ed224eadcbc6d650192897c4def5..d5757fa3d4254535448eb040593c8c23995b7bc9 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -256,6 +256,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+         return this.server.getPlayer(this.getUniqueId()) != null;
+     }
+ 
++    // Paper start
++    @Override
++    public boolean isConnected() {
++        return !this.getHandle().hasDisconnected();
++    }
++    // Paper end
++
+     @Override
+     public InetSocketAddress getAddress() {
+         if (this.getHandle().connection.protocol() == null) return null;