Python 2 is EOL at the end of 2019, so don't depend on it anymore.
Remove pychart support, because upstream is dead and there is no python3
version. We were only using it for one graph, and that has been
replaced in osmo-bsc I36b721f895caee9766528e14d854b6aa2a2fac85.
Depends: osmo-bsc I36b721f895caee9766528e14d854b6aa2a2fac85
Related: OS#2819
Change-Id: I57522e57e39682d6d123af4584785d327361e5a3
The manuals existed in different form for several years in an internal
sysmocom repository. However, since they had just recently been
converted from docboox-xml to asciidoc and all files have been
re-shuffled for enabling the public release, there's not much point in
keeping the history with git-filter-branch.
Oliver Smith
Harald Welte