Bug#903286: ignition-transport: unused Build-Depends: ruby-ronn

[Helmut Grohne]

Source: ignition-transport
Version: 4.0.0+dfsg-4
User: debian-cross at lists.debian.org
Usertags: cross-satisfiability

ignition-transport lists ruby-ronn in Build-Depends. While it does
mention ronn in some tutorials/, it does not mention ronn in source or
build logs in any way. I believe that the dependency is unused and can
be simply dropped.

The dependency breaks cross building.

Helmut