Revert "Enable bootupd integration now that we use unified core"
    
    Need changes in Anaconda:
    
    ```
    org.fedoraproject.Anaconda.Modules.Storage:INFO:anaconda.modules.common.task.task:Install the bootloader
    org.fedoraproject.Anaconda.Modules.Storage:DEBUG:anaconda.modules.storage.bootloader.utils:Installing the boot loader.
    org.fedoraproject.Anaconda.Modules.Storage:INFO:anaconda.modules.storage.bootloader.utils:boot loader stage1 target device is vda
    org.fedoraproject.Anaconda.Modules.Storage:INFO:anaconda.modules.storage.bootloader.utils:boot loader stage2 target device is vda2
    org.fedoraproject.Anaconda.Modules.Storage:INFO:anaconda.modules.storage.bootloader.grub2:bootloader.py: used boot args: rhgb quiet
    org.fedoraproject.Anaconda.Modules.Storage:INFO:program:Running in chroot '/mnt/sysroot'... grub2-editenv - set menu_auto_hide=1 boot_success=1
    org.fedoraproject.Anaconda.Modules.Storage:INFO:program:grub2-editenv: error: cannot open `/boot/grub2/grubenv.new': No such file or directory.
    org.fedoraproject.Anaconda.Modules.Storage:DEBUG:program:Return code: 1
    ```
    
    See: https://pagure.io/workstation-ostree-config/pull-request/330
    
    This reverts commit 819da5c8ecf3c707f87ddf5309926fe0160afe76.