item stack: don't use nullable operator

Its not nullable anymore

Author: Bixilon

src/main/java/de/bixilon/minosoft/data/container/equipment/EntityEquipment.kt

@@ -54,7 +54,7 @@ class EntityEquipment(
             if (enchantment is SlotSpecificEnchantment && !enchantment.canApply(entity, slot, item)) {
                 continue
             }
-            val level = item.enchanting?.enchantments?.get(enchantment) ?: continue
+            val level = item.enchanting.enchantments[enchantment] ?: continue
             if (level > maxLevel) {
                 maxLevel = level
             }

src/main/java/de/bixilon/minosoft/data/registries/item/items/weapon/attack/range/pullable/BowItem.kt

@@ -36,7 +36,7 @@ open class BowItem(identifier: ResourceLocation = this.identifier) : RangeWeapon
             // infinite arrows
             return LongUseResults.START
         }
-        if (stack.enchanting?.enchantments?.get(WeaponEnchantment.Infinity) != null) {
+        if (stack.enchanting.enchantments[WeaponEnchantment.Infinity] != null) {
             return LongUseResults.START
         }
         // TODO: check if player has arrows

src/main/java/de/bixilon/minosoft/gui/rendering/gui/gui/popper/item/ItemInfoPopper.kt

@@ -62,8 +62,7 @@ class ItemInfoPopper(
                 text += line
             }
         }
-        stack.enchanting?.enchantments?.let {
-            if (it.isEmpty()) return@let
+        stack.enchanting.enchantments.takeIf { it.isNotEmpty() }?.let {
             text += "\n"
             val language = context.session.language
             for ((enchantment, level) in it) {