ci: Drop an unused files

Cruft from previous CI flows.

ci/fah29-insttests.sh

@@ -1,8 +0,0 @@
-#!/usr/bin/bash
-set -xeuo pipefail
-
-./tests/installed/provision.sh
-# TODO: enhance papr to have caching, a bit like https://docs.travis-ci.com/user/caching/
-cd tests/installed
-curl -Lo fedora-atomic-host.qcow2 https://getfedora.org/atomic_qcow2_latest
-exec env "TEST_SUBJECTS=$(pwd)/fedora-atomic-host.qcow2" ./run.sh

ci/provision-prep.sh

@@ -1,16 +0,0 @@
-#!/usr/bin/bash
-# Prepare the current environment
-
-set -xeuo pipefail
-
-dn=$(dirname $0)
-. ${dn}/libbuild.sh
-pkg_upgrade
-pkg_install_buildroot
-pkg_install sudo which attr fuse strace \
-            libubsan libasan libtsan PyYAML elfutils
-pkg_install_if_os fedora gjs gnome-desktop-testing parallel coccinelle clang
-
-if test -n "${CI_PKGS:-}"; then
-    pkg_install ${CI_PKGS}
-fi