fix and cleanup loot table patches (#10100)

* fix and cleanup loot table patches

* fixes

patches/api/Add-Mob-Experience-reward-API.patch

@@ -11,14 +11,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
 @@ -0,0 +0,0 @@ public interface Mob extends LivingEntity, Lootable {
        */
      public void setLeftHanded(boolean leftHanded);
-     // Paper end
+     // Paper end - left-handed API
 +
-+    // Paper start
++    // Paper start - mob xp reward API
 +    /**
 +     * Gets the amount of experience the mob will possibly drop. This value is randomized and it can give different results
 +     *
 +     * @return the amount of experience the mob will possibly drop
 +     */
 +    public int getPossibleExperienceReward();
-+    // Paper end
++    // Paper end - mob xp reward API
  }