remove api that was scheduled for removal

patches/api/0305-Left-handed-API.patch

@@ -0,0 +1,31 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William Blake Galbreath <blake.galbreath@gmail.com>
+Date: Thu, 14 Oct 2021 12:36:46 -0500
+Subject: [PATCH] Left handed API
+
+
+diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
+index 91d31e5418a5ab7cefd7c02a41bbec8464fe7ab1..d55250d820b02f3a23b99a59e68d3361698baddf 100644
+--- a/src/main/java/org/bukkit/entity/Mob.java
++++ b/src/main/java/org/bukkit/entity/Mob.java
+@@ -204,4 +204,20 @@ public interface Mob extends LivingEntity, Lootable {
+      */
+     void setAggressive(boolean aggressive);
+     // Paper end - Missing Entity API
++
++    // Paper start - left-handed API
++    /**
++     * Check if Mob is left-handed
++     *
++     * @return True if left-handed
++     */
++    public boolean isLeftHanded();
++
++    /**
++      * Set if Mob is left-handed
++      *
++      * @param leftHanded True if left-handed
++      */
++    public void setLeftHanded(boolean leftHanded);
++    // Paper end - left-handed API
+ }