Update setup.py and remove useless files

[artzet-s]

No description provided.

[pradal]

There was a bug.
The package has been restructured, but the old packages at the root have not all been moved.

Either you move the packages into openalea, or you let openalea manage the namespace.
For instance, both
stocatree and openalea/stoctree exists. But also other packages at the src/

[artzet-s]

Hi @pradal , thanks for review !

Git doesn't delete folder if you checkout a version, but it will delete all empty folder on the remote repository (is for that that we cannot push empty folder).

If your look at my fork (https://github.com/artzet-s/MAppleT) I don't have anymore stocatree in src at least.

I not moved cpp folder because I don't know why it's here in fact ... It seems don't be call (Makefile have static path of /home/cokelaer/.. ) so I don't know what to do with that and I don't move it. I think it serve as script/routine before .

Same for wralea, I don't knew if I have to move them as well. But I understand now and I will move them into openalea dir.