Check if we need pyasn1 and cryptography about cylc-flow-feedstock

[kinow]

And if indeed necessary, then let's add a comment explaining why. The other dependencies like the ones used for terminal colors, or GraphQL, protobuf, etc., are easier to guess why they were added, so not necessary to have comments for those.

[kinow]

Looks like pyasn1 and cryptography both came with the auto-generator for the recipe. Likely via python-jose: https://pypi.org/project/python-jose/

Quite sure we don't have python-jose anymore (it was used for JWT I think?). So we should be OK to remove both dependencies in the next release, after running some tests just to be sure I think.

[oliver-sanders]

removed.