remove api that was scheduled for removal

patches/api/0006-Adventure.patch

@@ -374,10 +374,10 @@ index 0000000000000000000000000000000000000000..01cf89d3558132912c4d0eb48c98cd8c
 +}
 diff --git a/src/main/java/io/papermc/paper/event/player/AsyncChatDecorateEvent.java b/src/main/java/io/papermc/paper/event/player/AsyncChatDecorateEvent.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..d4c01e4d332b46f0b129dd5f9e9737ba19923562
+index 0000000000000000000000000000000000000000..2e492f4cd179135bd40ad951ab23acb562be2f06
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/event/player/AsyncChatDecorateEvent.java
-@@ -0,0 +1,118 @@
+@@ -0,0 +1,105 @@
 +package io.papermc.paper.event.player;
 +
 +import net.kyori.adventure.text.Component;
@@ -459,19 +459,6 @@ index 0000000000000000000000000000000000000000..d4c01e4d332b46f0b129dd5f9e9737ba
 +        this.result = result;
 +    }
 +
-+    /**
-+     * If this decorating is part of a preview request/response.
-+     *
-+     * @return {@code true} if part of previewing
-+     * @deprecated chat preview was removed in 1.19.3
-+     */
-+    @Deprecated(forRemoval = true, since = "1.19.3")
-+    @ApiStatus.ScheduledForRemoval(inVersion = "1.21")
-+    @Contract(value = "-> false", pure = true)
-+    public boolean isPreview() {
-+        return false;
-+    }
-+
 +    @Override
 +    public boolean isCancelled() {
 +        return this.cancelled;

patches/api/0169-Add-Heightmap-API.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Spottedleaf <[email protected]>
+Date: Sat, 1 Dec 2018 19:00:36 -0800
+Subject: [PATCH] Add Heightmap API
+
+Changed to use upstream's heightmap API - Machine_Maker
+
+diff --git a/src/main/java/org/bukkit/Location.java b/src/main/java/org/bukkit/Location.java
+index eec6c9cd7da6938351905129bb5a66f49a257d01..65618b6b3c950fb27707f243a766511d6cd3aab4 100644
+--- a/src/main/java/org/bukkit/Location.java
++++ b/src/main/java/org/bukkit/Location.java
+@@ -649,6 +649,30 @@ public class Location implements Cloneable, ConfigurationSerializable, io.paperm
+     }
+     // Paper end - expand Location API
+
++    // Paper start - Add heightmap api
++    /**
++     * Returns a copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ())
++     * @return A copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ())
++     * @throws NullPointerException if {{@link #getWorld()}} is {@code null}
++     */
++    @NotNull
++    public Location toHighestLocation() {
++        return this.toHighestLocation(HeightMap.WORLD_SURFACE);
++    }
++
++    /**
++     * Returns a copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ(), heightMap)
++     * @param heightMap The heightmap to use for finding the highest y location.
++     * @return A copy of this location except with y = getWorld().getHighestBlockYAt(this.getBlockX(), this.getBlockZ(), heightMap)
++     */
++    @NotNull
++    public Location toHighestLocation(@NotNull final HeightMap heightMap) {
++        final Location ret = this.clone();
++        ret.setY(this.getWorld().getHighestBlockYAt(this, heightMap));
++        return ret;
++    }
++    // Paper end - Add heightmap api
++
+     // Paper start - Expand Explosions API
+     /**
+      * Creates explosion at this location with given power