Bug#938661: theano: remove python2

[Thomas Goirand]

Hi Rebecca,

I've just uploaded the Python 2 removal from deepnano (ie: I switched it
to Python 3). It looks like working... ;)

So, now there's no blockger for theano. Please upload what I saw you
commited in the Git repo for Theano! Since you're a DM, I'm guessing you
already have a ACL for this package. If you still need sponsoring, let
me know, and I'll sponsor the upload for you.

Thanks for your work,
Cheers,

Thomas Goirand (zigo)