Revert "Remove 0017 - potentially causing issues on respawn with plugins"

Turned out this wasn't the issue

CraftBukkit-Patches/0017-Do-not-remove-player-in-world-change.patch

@@ -0,0 +1,31 @@
+From 09f43d297f1e89124a97532b0c02750b0f154fe9 Mon Sep 17 00:00:00 2001
+From: T00thpick1 <t00thpick1dirko@gmail.com>
+Date: Mon, 23 Jun 2014 21:37:24 -0500
+Subject: [PATCH] Do not remove player in world change
+
+
+diff --git a/src/main/java/net/minecraft/server/PlayerList.java b/src/main/java/net/minecraft/server/PlayerList.java
+index a4a59ee..a723f3b 100644
+--- a/src/main/java/net/minecraft/server/PlayerList.java
++++ b/src/main/java/net/minecraft/server/PlayerList.java
+@@ -452,7 +452,7 @@ public abstract class PlayerList {
+         entityplayer.r().getTracker().untrackPlayer(entityplayer);
+         // entityplayer.r().getTracker().untrackEntity(entityplayer); // CraftBukkit
+         entityplayer.r().getPlayerChunkMap().removePlayer(entityplayer);
+-        this.players.remove(entityplayer);
++        // this.players.remove(entityplayer); // PaperSpigot -- Fixes BUKKIT-4561 and BUKKIT-4082 and BUKKIT-2094
+         this.server.getWorldServer(entityplayer.dimension).removeEntity(entityplayer);
+         ChunkCoordinates chunkcoordinates = entityplayer.getBed();
+         boolean flag1 = entityplayer.isRespawnForced();
+@@ -547,7 +547,7 @@ public abstract class PlayerList {
+         if (!entityplayer.playerConnection.isDisconnected()) {
+             worldserver.getPlayerChunkMap().addPlayer(entityplayer1);
+             worldserver.addEntity(entityplayer1);
+-            this.players.add(entityplayer1);
++            // this.players.add(entityplayer1); // PaperSpigot -- Fixes BUKKIT-4561 and BUKKIT-4082 and BUKKIT-2094
+         }
+         // Added from changeDimension
+         this.updateClient(entityplayer1); // Update health, etc...
+-- 
+1.9.1
+