Remove buggy transition when displaying frontend blocks

packages/builder/src/components/userInterface/ItemTab/Item.svelte

@@ -1,13 +1,8 @@
 <script>
-  import { fly } from "svelte/transition"
   export let item
 </script>
 
-<div
-  data-cy={item.name}
-  class="item-item"
-  in:fly={{ y: 100, duration: 1000 }}
-  on:click>
+<div data-cy={item.name} class="item-item" on:click>
   <div class="item-icon">
     <i class={item.icon} />
   </div>