in the developer notes, the last parameter to the WA_getCMSContent function call determines if the edit icon is shown or not. for example, the default is to pass false:
<?php
include('/Applications/MAMP/htdocs/cms_builder/WA_CMS/addtosite.php');
echo WA_getCMSContent($database_PowerCMSConnection, $PowerCMSConnection, 'my', 'content', false);
?>
change that to true to hide the edit icon:
<?php
include('/Applications/MAMP/htdocs/cms_builder/WA_CMS/addtosite.php');
echo WA_getCMSContent($database_PowerCMSConnection, $PowerCMSConnection, 'my', 'content', true);
?>