Perform permission removals after the quit event. Fixes BUKKIT-3303

The player would have no permissions (other than their OP status)
when checked in the Quit event. This is because we removed permissions
before the event occurred. By calling it afterwards, we can persist
the data until the server finally removes the player.

src/main/java/net/minecraft/server/PlayerConnection.java

@@ -163,7 +163,6 @@ public class PlayerConnection extends Connection {
             if (leaveMessage != null && leaveMessage.length() > 0) {
                 this.minecraftServer.getPlayerList().sendAll(new Packet3Chat(leaveMessage));
             }
-            getPlayer().disconnect(s);
             // CraftBukkit end
 
             this.minecraftServer.getPlayerList().disconnect(this.player);
@@ -1068,9 +1067,6 @@ public class PlayerConnection extends Connection {
     }
 
     public void a(Packet255KickDisconnect packet255kickdisconnect) {
-        // CraftBukkit start
-        getPlayer().disconnect("disconnect.quitting");
-        // CraftBukkit end
         this.networkManager.a("disconnect.quitting", new Object[0]);
     }