It was deprecated in Twig 1.x and removed in 2.0.

Now we can load templates in twig with two syntaxes:

- The original twig syntax: "@module/path/to/template.twig"
- The SSP syntax: "module:path/to/template.php" or "module:path/to/template.tpl.php"

This allows us to load templates from modules inside a twig template itself (include, embed, etc), even when the main template is not in a module or in a different one.