Bug#943440: src:grass: Please update/remove libwxgtk3.0-dev build-dependency

[Olly Betts]

Package: src:grass
Version: 7.8.0-1
Severity: serious
Justification: blocks the almost-complete wxwidgets3.0-gtk3 transition

According to the transition tracker, the wxwidgets3.0-gtk3 transition is
96% and the only remaining blockers are a missing mips64el build of
codelite (currently building) and a missing mipsel build of mrpt (due
for AUTORM from testing on 2019-10-28):

https://release.debian.org/transitions/html/wxwidgets3.0-gtk3.html

However, checking "dak rm -Rn -b libwxgtk3.0-dev" on coccia I see that
your package has a build-dependency on libwxgtk3.0-dev which doesn't
result in any shlib dependencies in the built packages.  If this package
is not actually used this build dependency should be dropped; if it's
used during the build then you want to update to use
libwxgtk3.0-gtk3-dev instead; if it should result in a shlib dependency,
please debug!

Let me know if you'd like me to NMU a fix for this.

Cheers,
    Olly