[debian] Remove test/doc Build-Depends
We are not actually running tests during package build. (This was
disabled for python2, now it is also for python3.) And having these
build-depends makes it hard to rebuild the package.
addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile