#740: Fix EntityDamageEvent not being called for non EntityDamageSource for End Crystals

src/main/java/org/bukkit/craftbukkit/event/CraftEventFactory.java

@@ -986,10 +986,6 @@ public class CraftEventFactory {
     }
 
     public static boolean handleNonLivingEntityDamageEvent(Entity entity, DamageSource source, double damage, boolean cancelOnZeroDamage, boolean cancelled) {
-        if (entity instanceof EntityEnderCrystal && !(source instanceof EntityDamageSource)) {
-            return false;
-        }
-
         final EnumMap<DamageModifier, Double> modifiers = new EnumMap<DamageModifier, Double>(DamageModifier.class);
         final EnumMap<DamageModifier, Function<? super Double, Double>> functions = new EnumMap(DamageModifier.class);