Bug#903287: ignition-math4: unused Build-Depends: ruby-ronn

[Helmut Grohne]

Source: ignition-math4
Version: 4.0.0+dfsg1-5
User: debian-cross at lists.debian.org
Usertags: cross-satisfiability

ignition-math4 Build-Depends on ruby-ronn, but neither its source nor
its build log mention ronn in any way. Please consider dropping the
unused dependency.

The dependency happens to break cross building.

Helmut