body class filter

add_filter('body_class', 'adjust_body_class', 20, 2);
function adjust_body_class($wp_classes, $extra_classes) {
if( is_page_template( 'alicsur1-page.php' ) ) :
$blacklist = array('singular');
// Filter the body classes
  foreach( $blacklist as $val ) {
    if (!in_array($val, $wp_classes)) : continue;
    else:
      foreach($wp_classes as $key => $value) {
      if ($value == $val) unset($wp_classes[$key]);
      }
    endif;
  }
endif;
// Add the extra classes back untouched
return array_merge($wp_classes, (array) $extra_classes );
}