Currently, we don't have any options to hide the title of the contact form. This is the title being referred to.
To remove the title, we can use the following script in Divi → Theme Options → Integration Tab → Add code to the < head > of your blog field.
<script>
(function($) {
$(document).ready(function() {
$(document).on('click', '.et_pb_contact_submit', function() {
var clickedBtn = $(this);
var thisForm = clickedBtn.closest('.et_pb_contact_form_container');
$(document).ajaxComplete(function() {
if (!thisForm.find('.et-pb-contact-message').is(':empty')) {
thisForm.find('.et_pb_contact_main_title').hide();
}
});
});
});
})(jQuery);
</script>
It will remove the form title once it is successfully submitted and the success message shows.