Filter Bar: string filter (remove elements)

add_filter( 'tribe_get_template_part_content', 'modify_filterbar_output', 10, 5 );

/**
 * We'll use some string manipulation to tweak filter bar output.
 *
 * Subsequent releases of Filter Bar may contain additional hooks that allow a finer
 * grained approach to this problem.
 *
 * @param $html
 * @param $template
 * @param $file
 * @param $slug
 * @param $name
 * @return string
 */
function modify_filterbar_output( $html, $template, $file, $slug, $name ) {
    // Only interfere if this relates to the horizontal filter bar
    // (you can change appropriately if you are interested in the vertical form)
    if ( 'filter-bar/filter-view-horizontal' !== $slug ) return $html;

    // In this case we want to eliminate the "all day" entry in the time filter
    // (you could similarly adapt this to remove different elements)
    $eliminate = '<li><label><input type="checkbox" value="allday"  name="tribe_timeofday[]"  /><span title="All Day">All Day</span></label></li>';
    return str_replace( $eliminate, '', $html );
}