remove api that was scheduled for removal

patches/api/0252-Add-Block-isValidTool.patch

@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Mon, 6 Jul 2020 12:44:23 -0700
+Subject: [PATCH] Add Block#isValidTool
+
+
+diff --git a/src/main/java/org/bukkit/block/Block.java b/src/main/java/org/bukkit/block/Block.java
+index 36e177757624c4fc7835e253d3b2dd773f50f43d..6ada8c036f1a112f11a9fbc3baf1f79b3f1bfc8e 100644
+--- a/src/main/java/org/bukkit/block/Block.java
++++ b/src/main/java/org/bukkit/block/Block.java
+@@ -230,6 +230,15 @@ public interface Block extends Metadatable, Translatable, net.kyori.adventure.tr
+     public static int getBlockKeyZ(long packed) {
+         return (int) ((packed << 10) >> 37);
+     }
++
++    /**
++     * Checks if the itemstack is a valid tool to
++     * break the block with
++     *
++     * @param itemStack The (tool) itemstack
++     * @return whether the block will drop items
++     */
++    boolean isValidTool(@NotNull ItemStack itemStack);
+     // Paper end
+ 
+     /**