[1.16] Make it run (#3626)

* She compiles!

Also readded the armorstand ticking patch, thanks cat

* Update mob goal api

* Misc fixes to make it run

drop per playing mob spawns for now

Spigot-API-Patches/Potential-bed-API.patch

@@ -15,14 +15,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
       */
      public int getSleepTicks();
  
-+    /**
-+     * Gets the Location where the player will spawn at their bed, null if
-+     * they have not slept in one or their current bed spawn is invalid.
-+     *
-+     * @return Bed Spawn Location if bed exists, otherwise null.
-+     */
-+    @Nullable
-+    public Location getBedSpawnLocation();
 +
 +    // Paper start - Potential bed api
 +    /**
@@ -35,22 +27,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 +    @Nullable
 +    public Location getPotentialBedLocation();
 +    // Paper end
-+
-+    /**
-+     * Sets the Location where the player will spawn at their bed.
-+     *
-+     * @param location where to set the respawn location
-+     */
-+    public void setBedSpawnLocation(@Nullable Location location);
-+
-+    /**
-+     * Sets the Location where the player will spawn at their bed.
-+     *
-+     * @param location where to set the respawn location
-+     * @param force whether to forcefully set the respawn location even if a
-+     *     valid bed is not present
-+     */
-+    public void setBedSpawnLocation(@Nullable Location location, boolean force);
 +
      /**
       * Attempts to make the entity sleep at the given location.