Update package.json to remove duplicated icon import
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3558949. -->
Reported by: [pameeela](https://www.drupal.org/user/1431110)
Related to !120
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>The Phosphor icon library is included in the repo already and separately copied from node_modules. We don't need the second version so we should remove this from package.json.</p>
issue