How to remove generator in Drupal 7

By default, the source code of Drupal sites contains the line <meta name=”generator” content=”Drupal 7 (http://drupal.org)” />

To remove it, you need to edit the file /sites/all/themes/mytheme/template.php (instead of mytheme, go to your site’s theme folder), find function shop_adaptive_html_head_alter and add before the closing character } this line:

unset($head_elements['metatag_generator_0']);

If it doesn’t work, try these options:

 unset($head_elements['system_meta_generator']);

or

unset($head_elements['metatag_generator']);

If there was no mention of function shop_adaptive_html_head_alter in the template.php file, then add the function:

function shop_adaptive_html_head_alter(&$head_elements) {
  unset($head_elements['metatag_generator_0']);
}

with options for unset from the examples above.