d/control: Remove unused build-dependency on libcroco3-dev
Since version 4.8.0, cinnamon bundles its own copy of libcroco, which gets linked statically and is used to parse trusted CSS-based themes. Dropping the now-unused build-dependency will let us remove the system copy of libcroco from Debian, avoiding the need to treat it as security-sensitive when it has bugs that can be triggered by untrusted CSS.
Closes: #967027
According to diffoscope, the only differences caused by this change are in the API documentation in cinnamon-doc
(cross-references to the libcroco documentation disappear).
The last things that need to happen before we can remove libcroco are:
- this change
- get the new cinnamon into testing
- fix missing builds of gettext on ppc64el and mipsel
- get the new gettext into testing
I would like to not ship the separate libcroco in bullseye.