Fix double dropping xp now that Spigot fixed it

Spigot-Server-Patches/PlayerDeathEvent-shouldDropExperience.patch

@@ -5,15 +5,16 @@ Subject: [PATCH] PlayerDeathEvent#shouldDropExperience
 
 
 diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
-index f28de40a7..0888f268f 100644
+index f28de40a7..1ec29f157 100644
 --- a/src/main/java/net/minecraft/server/EntityPlayer.java
 +++ b/src/main/java/net/minecraft/server/EntityPlayer.java
 @@ -0,0 +0,0 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
-         }
  
-         this.setSpectatorTarget(this); // Remove spectated target
-+        if (event.shouldDropExperience()) this.dropExperience(); // Paper - drop experience
-         // CraftBukkit end
- 
-         // CraftBukkit - Get our scores instead
+         this.releaseShoulderEntities();
+         // SPIGOT-5478 must be called manually now
+-        this.dropExperience();
++        if (event.shouldDropExperience()) this.dropExperience(); // Paper - tie to event
+         // we clean the player's inventory after the EntityDeathEvent is called so plugins can get the exact state of the inventory.
+         if (!event.getKeepInventory()) {
+             // Paper start - replace logic
 --