Hi – great question!
Here’s a short snippet you could add to your theme’s functions.php file that should help:
add_filter( 'tribe_events_before_html', 'singular_custom_html_only' );
function singular_custom_html_only( $html ) {
return ! is_singular() ? '' : $html;
}
This example would only impact on the before field, but you could apply it to both by repeating the first line of code (but change tribe_events_before_html to tribe_events_after_html in the second line).
Does that help?