Remove dbus-tools from coreos bootstrap (#6428)

Trying to layer this package on Fedora 32 causes the install to crash
and furthermore it looks like the original bug linked to in the comment
has been resolved for Fedora 31

roles/bootstrap-os/defaults/main.yml

@@ -14,7 +14,6 @@ use_oracle_public_repo: true
 fedora_coreos_packages:
   - python
   - libselinux-python3
-  - dbus-tools              # because of networkManager reload bug (https://bugzilla.redhat.com/show_bug.cgi?id=1745659)
   - ethtool                 # required in kubeadm preflight phase for verifying the environment
   - ipset                   # required in kubeadm preflight phase for verifying the environment
   - conntrack-tools         # required by kube-proxy