Remove libguestfs in line with nova changes

This change removes the libguestfs package from the bootc container.
This is inline with efforts from the Compute team to remove this package
from our dataplane nodes:
https://github.com/openstack-k8s-operators/tcib/pull/142/files#diff-20fdbc4b7badc4cdcab1a535614f5d3c52acabf84aba7661ac2e5ead8acc276eR8

Signed-off-by: Brendan Shephard <[email protected]>

Author: bshephar

bootc/Containerfile.centos9

@@ -45,7 +45,6 @@ ARG LIBVIRT_PACKAGES="\
     libvirt-daemon \
     qemu-kvm \
     qemu-img \
-    libguestfs \
     libseccomp \
     swtpm \
     swtpm-tools \