Scenario
Users who are using the External Catalog or WSDK feature and prefer to remove the Continue Shopping button in the Shopping Cart page can do so by following the steps below.
Solution
1. Navigate to List > Web Site > Tabs
2. Click on Edit for the Shopping Cart
3. In the Message field, click on the icon to switch to Source Edit Mode
4. Use the following code to hide the Continue Shopping button
<script type='text/javascript'>if(document.getElementById('cancel')!=null){document.getElementById('cancel').style.display = "none";}//end if</script>