SPIGOT-264: Remove PlayerPortalEvent's handler list

So it can chain PlayerTeleportEvent at the same time

By: Thinkofdeath <thinkofdeath@spigotmc.org>

paper-api/src/main/java/org/bukkit/event/player/PlayerPortalEvent.java

@@ -3,7 +3,6 @@ package org.bukkit.event.player;
 import org.bukkit.Location;
 import org.bukkit.TravelAgent;
 import org.bukkit.entity.Player;
-import org.bukkit.event.HandlerList;
 
 /**
  * Called when a player is about to teleport because it is in contact with a
@@ -12,7 +11,6 @@ import org.bukkit.event.HandlerList;
  * For other entities see {@link org.bukkit.event.entity.EntityPortalEvent}
  */
 public class PlayerPortalEvent extends PlayerTeleportEvent {
-    private static final HandlerList handlers = new HandlerList();
     protected boolean useTravelAgent = true;
     protected TravelAgent travelAgent;
 
@@ -75,13 +73,4 @@ public class PlayerPortalEvent extends PlayerTeleportEvent {
     public void setPortalTravelAgent(TravelAgent travelAgent) {
         this.travelAgent = travelAgent;
     }
-
-    @Override
-    public HandlerList getHandlers() {
-        return handlers;
-    }
-
-    public static HandlerList getHandlerList() {
-        return handlers;
-    }
-}
+}