Don't throw when removing unplaced player in NearbyPlayers

patches/server/MC-Utils.patch

@@ -5534,7 +5534,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    public void removePlayer(final ServerPlayer player) {
 +        final TrackedPlayer[] players = this.players.remove(player);
 +        if (players == null) {
-+            throw new IllegalStateException("Don't have player " + player);
++            return; // May be called during teleportation before the player is actually placed
 +        }
 +
 +        for (final TrackedPlayer tracker : players) {