removed CodeArea (not used)

packages/builder/src/components/common/CodeArea.svelte

@@ -1,20 +0,0 @@
-<script>
-  import { JavaScriptIcon } from "../common/Icons"
-  // todo: use https://ace.c9.io
-  export let text = ""
-</script>
-
-<textarea class="uk-textarea" bind:value={text} />
-
-<style>
-  textarea {
-    padding: 10px;
-    margin-top: 5px;
-    margin-bottom: 10px;
-    background: var(--grey-7);
-    color: var(--white);
-    font-family: "Courier New", Courier, monospace;
-    height: 200px;
-    border-radius: 5px;
-  }
-</style>