Should we use >>> in doc examples

[hyanwong]

Some docstrings preface example code with >>>, e.g.

https://tskit.dev/tskit/docs/stable/python-api.html#tskit.Tree.count_topologies

and some don't, e.g.

https://tskit.dev/tskit/docs/stable/python-api.html#tskit.Tree.prev

I guess we should pick some convention (I think we could probably remove the >>>, so that copy-paste works more smoothly)

[jeromekelleher]

I'm guessing the repl form is quite old, predating the systematic use of sphinx. Happy to remove

[benjeffery]

I'm guessing the repl form is quite old, predating the systematic use of sphinx. Happy to remove

Agreed!