How were these floating images added (and how can I remove them)?

Site URL: https://shilohopc.org

A 3rd party company added these floating service time and directions banners to our website. I want to remove them, but I cannot find anywhere in the Squarespace console where they were added. How are these being injected into the site?

Home > Settings > Advanced > Code Injection > Find & remove this

<div id="staticBoxes"><div class="pageWidth">
 <div class="big fullWidth"><img src="https://static1.squarespace.com/static/594a718ef7e0abeec2c15940/t/5b800924575d1f9d10bcca3e/1535117604637/ServiceTimesButton-2.png"><a href="https://goo.gl/maps/SYysU3wsjEG2" target="_blank"></a></div>
 <div class="mini fullWidth"><img src="https://static1.squarespace.com/static/594a718ef7e0abeec2c15940/t/5b800924575d1f9d10bcca3e/1535117604637/ServiceTimesButton-2.png"><a href="https://goo.gl/maps/SYysU3wsjEG2" target="_blank"></a></div>
</div></div>