cannot remove/upgrade package if using only systemd

 LANGUAGE=en_US LANG=C sudo apt remove ofono -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  ofono
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 1920 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 282802 files and directories currently installed.)
Removing ofono (1.12.bzr6878+14.10.20140926-0ubuntu1) ...
Failed to issue method call: Unit ofono.service not loaded.
invoke-rc.d: initscript ofono, action "stop" failed.
dpkg: error processing package ofono (--remove):
 subprocess installed pre-removal script returned error exit status 5
Failed to issue method call: Unit ofono.service failed to load: No such file or directory.
invoke-rc.d: initscript ofono, action "start" failed.
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 6
Errors were encountered while processing:
 ofono
E: Sub-process /usr/bin/dpkg returned an error code (1)