Remove link preview dependency.

Author: toddbirchard

default.hbs

@@ -23,7 +23,6 @@
     {{!-- Page-specific JS --}}
     {{#is "post"}}
       <script src="{{asset 'built/post.js'}}"></script>
-      <script src="https://js.linkz.ai/?key=113483423586035531643"></script>
     {{/is}}
     {{#is "page, author, tag, about, series"}}
       <script src="{{asset 'built/page.js'}}"></script>