Please remove armhf and s390x binaries for gdpc

[Logan Rosen]

gdpc now only builds for 64-bit architectures in Debian, so there are no longer s390x and armhf binaries produced (see the changelog notes here: https://launchpad.net/ubuntu/+source/gdpc/2.2.5-13).

Please remove the armhf and s390x binaries accordingly in Ubuntu so that the new version can migrate.

[Steve Langasek (vorlon)]

> gdpc now only builds for 64-bit architectures in Debian,

s390x is a 64-bit architecture, so this rationale seems inaccurate?

[Logan Rosen (logan)]

Sorry, I bungled that explanation. They referenced this bug for removing s390x as well: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982103

Its autopkgtest fails, and "given the hardware, [they] don't really expect it would be used
for molecular dynamics simulation."

[Steve Langasek (vorlon)]

This got done somewhere along the way :)