Remove 'fix Vanilla Minecart speed' patch (#10068)

The game uses 0.95d now

patches/server/0567-add-isDeeplySleeping-to-HumanEntity.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Thu, 8 Apr 2021 17:36:10 -0700
+Subject: [PATCH] add isDeeplySleeping to HumanEntity
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+index faaed968a3e771c1db3957e2b42acf6d87a38842..a5ca7c33565a3ffbb6ff991f5be2e1d807b4b4bf 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+@@ -133,6 +133,13 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
+     }
+     // Paper end
+ 
++    // Paper start
++    @Override
++    public boolean isDeeplySleeping() {
++        return getHandle().isSleepingLongEnough();
++    }
++    // Paper end
++
+     @Override
+     public int getSleepTicks() {
+         return this.getHandle().sleepCounter;