remove api that was scheduled for removal

patches/api/0245-Add-getMainThreadExecutor-to-BukkitScheduler.patch

@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aleksander Jagiello <themolkapl@gmail.com>
+Date: Sun, 24 Jan 2021 22:17:29 +0100
+Subject: [PATCH] Add getMainThreadExecutor to BukkitScheduler
+
+
+diff --git a/src/main/java/org/bukkit/scheduler/BukkitScheduler.java b/src/main/java/org/bukkit/scheduler/BukkitScheduler.java
+index 0368e9125e6d73449cfa22ec7bdabf274457f4c1..487b5ca23159b531475c3d650894be707b49914e 100644
+--- a/src/main/java/org/bukkit/scheduler/BukkitScheduler.java
++++ b/src/main/java/org/bukkit/scheduler/BukkitScheduler.java
+@@ -457,4 +457,15 @@ public interface BukkitScheduler {
+     @Deprecated
+     @NotNull
+     public BukkitTask runTaskTimerAsynchronously(@NotNull Plugin plugin, @NotNull BukkitRunnable task, long delay, long period) throws IllegalArgumentException;
++
++    // Paper start - add getMainThreadExecutor
++    /**
++     * Returns an executor that will run tasks on the next server tick.
++     *
++     * @param plugin the reference to the plugin scheduling tasks
++     * @return an executor associated with the given plugin
++     */
++    @NotNull
++    public java.util.concurrent.Executor getMainThreadExecutor(@NotNull Plugin plugin);
++    // Paper end
+ }