In Edgy Eft, you need to also remove the file /usr/share/omf/sanduhr/sanduhr-de.omf.
Or better yet mv /usr/share/omf/sanduhr/sanduhr-de.omf /usr/share/omf/sanduhr/sanduhr-C.omf
Then you should be able to remove this package.
In Edgy Eft, you need to also remove the file /usr/share/ omf/sanduhr/ sanduhr- de.omf.
Or better yet omf/sanduhr/ sanduhr- de.omf /usr/share/ omf/sanduhr/ sanduhr- C.omf
mv /usr/share/
Then you should be able to remove this package.