Removal of aseba binaries for architectures s390x and ppc64el

The list of architectures for the aseba package was reduced between version 1.6.99+dfsg-3 and version 1.6.99+dfsg-5.

aseba (1.6.99+dfsg-5) unstable; urgency=medium

  * added riscv64 as a target architecture for this package. Closes: #1014916

 -- Georges Khaznadar <email address hidden> Fri, 15 Jul 2022 18:25:36 +0200

aseba (1.6.99+dfsg-4) unstable; urgency=medium

  * restricted architecture to any-amd64 any-i386 arm64 mips64el mipsel

 -- Georges Khaznadar <email address hidden> Thu, 12 May 2022 16:10:00 +0200

There is no other change between the two versions so I suggest that we remove the obsolete binaries.

 aseba | 1.6.99+dfsg-3 | kinetic-proposed/universe | ppc64el, s390x
 aseba | 1.6.99+dfsg-5 | kinetic-proposed/universe | source, amd64, arm64, riscv64

Thanks.