• wggl

• July 21, 2020 at 11:25 pm

Maybe this will help you:

function unsetGutenbergEditorStyles() {

    add_filter('block_editor_settings', function ($editor_settings) {
              unset($editor_settings['styles'][0]);
              return $editor_settings;
          }
);
    
}
add_action( 'admin_init', 'unsetGutenbergEditorStyles' );