DOCS-107 Remove Scarf script from all Percona doc projects (#540)

Update main.html

_resource/overrides/main.html

@@ -14,7 +14,6 @@ <h4>Contact Us </h4>
        <p>For free technical help, visit the Percona <a class="reference external" href="https://forums.percona.com/c/postgresql/25?utm_campaign=Doc%20pages" target="_blank">Community Forum</a>.<br>
         <p>To report bugs or submit feature requests, open a <a class="reference external" href="https://jira.percona.com/projects/DISTPG/issues/" target="_blank">JIRA</a> ticket.<br>
          <p>For paid <a class="reference external" href="https://www.percona.com/services/support"> support </a> and <a class="reference external" href="https://www.percona.com/services/managed-services"> managed </a> or <a class="reference external" href="https://www.percona.com/services/consulting">consulting services </a>, contact <a class="reference external" href="https://www.percona.com/about-percona/contact" target="_blank">Percona Sales</a>.</p>
- <img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=b95a2b04-c5c7-47f9-bb4e-b7fc13c3ab0d" />
  </article>
 </div>
 </div>