Remove obsolete checksums from testing

testing/apache2-mod-authnz-external/APKBUILD

testing/aqemu/APKBUILD

testing/aufs-util/APKBUILD

testing/cpupower/APKBUILD

testing/ctorrent-dnh/APKBUILD

testing/daemontools/APKBUILD

testing/dnsenum/APKBUILD

testing/ebook-tools/APKBUILD

testing/fastd/APKBUILD

testing/fatback/APKBUILD

testing/gatling/APKBUILD

testing/go-acceptlanguageparser/APKBUILD

testing/go-httputils/APKBUILD

testing/gutenprint/APKBUILD

testing/icingaweb2-module-generictts/APKBUILD

testing/keystone/APKBUILD

testing/libmhash/APKBUILD

testing/libsmi/APKBUILD

testing/libtbb/APKBUILD

testing/libva-vdpau-driver/APKBUILD