Remove KeyedObject interface (#7680)

patches/server/0216-Vex-get-setSummoner-API.patch

@@ -1,34 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Aikar <aikar@aikar.co>
-Date: Wed, 4 Jul 2018 15:30:22 -0400
-Subject: [PATCH] Vex#get/setSummoner API
-
-Get's the NPC that summoned this Vex and
-Allow setting the vex's summoner
-
-Co-authored-by: BillyGalbreath <Blake.Galbreath@GMail.com>
-
-diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftVex.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftVex.java
-index d07d956e727483bb0b85dce618acb2adc8d89872..0f5c81c0d599d3b58f7864d1527391ad50983c4e 100644
---- a/src/main/java/org/bukkit/craftbukkit/entity/CraftVex.java
-+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftVex.java
-@@ -15,6 +15,19 @@ public class CraftVex extends CraftMonster implements Vex {
-         return (net.minecraft.world.entity.monster.Vex) super.getHandle();
-     }
- 
-+    // Paper start
-+    @Override
-+    public org.bukkit.entity.Mob getSummoner() {
-+        net.minecraft.world.entity.Mob owner = getHandle().getOwner();
-+        return owner != null ? (org.bukkit.entity.Mob) owner.getBukkitEntity() : null;
-+    }
-+
-+    @Override
-+    public void setSummoner(org.bukkit.entity.Mob summoner) {
-+        getHandle().setOwner(summoner == null ? null : ((CraftMob) summoner).getHandle());
-+    }
-+    // Paper end
-+
-     @Override
-     public String toString() {
-         return "CraftVex";