Do not use worldgen executor for api profile completions

We cannot put blocking network I/O onto the worldgen threads,
this will crash the server if it stalls

patches/server/0254-Expose-attack-cooldown-methods-for-Player.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Tue, 4 Sep 2018 15:02:00 -0500
+Subject: [PATCH] Expose attack cooldown methods for Player
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index d426534e7c16a307b93e9170c7eb9bcdbdac2ada..1a10eec46b9b0c3fb94b72e022e75ed89434c189 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -2491,6 +2491,21 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+         return this.adventure$pointers;
+     }
++
++    @Override
++    public float getCooldownPeriod() {
++        return getHandle().getCurrentItemAttackStrengthDelay();
++    }
++
++    @Override
++    public float getCooledAttackStrength(float adjustTicks) {
++        return getHandle().getAttackStrengthScale(adjustTicks);
++    }
++
++    @Override
++    public void resetCooldown() {
++        getHandle().resetAttackStrengthTicker();
++    }
+     // Paper end
+     // Spigot start
+     private final Player.Spigot spigot = new Player.Spigot()