[doubleratchet] removed this recipe

[goffi-contrib]

No description provided.

[AndreMiras]

I did experience the issue you're talking about regarding the slow download on that package.
Maybe we want to give a try to the github release instead.
https://github.com/Syndace/python-doubleratchet/archive/v0.6.0-beta.tar.gz
What do you think?
Otherwise that won't probably compile in our CI, so you could add it to the list of "broken recipe" here? https://github.com/kivy/python-for-android/blob/6c31e10/ci/constants.py

[goffi-contrib]

@AndreMiras I've been testing without the recipe, it's working (DoubleRatchet is pure python module).

I've tried to remove omemo-bakend-signal too, but when it's installed as pure python, dependencies are not installed correctly (notably DoubleRatchet is not present in the final distribution).

So I've updated this PR to remove entirely doubleratchet recipe.

[AndreMiras]

less is more, thanks 👏