* SimpleCmsBundle/Resources/config/menu-phpcr.xml
* MenuBundle/Resources/config/persistence-phpcr.xml
* MenuBundle/Resources/config/voters.xml
* BlockBundle/Resources/config/services.xml
* BlockBundle/Resources/config/persistence-phpcr.xml

and as we documented this in the cmf docs, we should keep it at least for this release. removing tags is very tricky, as it will just silently not work as expected. we could add a deprecated warning in the pass if we find anything. and later when we really want to remove it, at least lets replace it with something that scans for the tag and throws an exception that this is no longer supported.