[th/drop-ibft-settings-plugin] settings: drop ibft settings plugin
The functionality of the ibft settings plugin is now handled by nm-initrd-generator. There is no need for it anymore, drop it.
Note that ibft called iscsiadm, which requires CAP_SYS_ADMIN to work (). We really want to drop this capability, so the current solution of a settings plugin (as it is implemented) is wrong. The solution instead is nm-initrd-generator.
Also, on Fedora the ibft was disabled and probably on most other distributions as well. This was only used on RHEL.