Bug#823858: tracker.debian.org too noisy about duplicate files

[Matthias Klose]

Package: qa.debian.org

Looking at https://packages.qa.debian.org/g/gcc-5-cross-ports.html
this is just too noisy, and known. Would it be possible to disable that warning 
for any -cross package?  We only have these for linux headers, glibc and GCC.