Deprecate HorseJumpEvent's setPower and setCancelled methods

By: Thinkofdeath <thinkofdeath@spigotmc.org>

paper-api/src/main/java/org/bukkit/event/entity/HorseJumpEvent.java

@@ -21,6 +21,10 @@ public class HorseJumpEvent extends EntityEvent implements Cancellable {
         return cancelled;
     }
 
+    /**
+     * @deprecated horse jumping was moved client side.
+     */
+    @Deprecated
     public void setCancelled(boolean cancel) {
         cancelled = cancel;
     }
@@ -62,7 +66,9 @@ public class HorseJumpEvent extends EntityEvent implements Cancellable {
      * event will result in no jump animation at all.
      *
      * @param power power of the jump
+     * @deprecated horse jumping was moved client side.
      */
+    @Deprecated
     public void setPower(float power) {
         this.power = power;
     }