chacha20poly1305 obsolete dependency

[Mte90]

I get module 'pypandoc' has no attribute 'convert' on installing the ui dependencies, https://github.com/ph4r05/py-chacha20poly1305/blob/master/setup.py#L25

The support for that method was removed on 1.8 pypandoc release https://stackoverflow.com/questions/74745548/attributeerror-module-pypandoc-has-no-attribute-convert but the latest one is 1.12.

[quexten]

Can you try running without the dependencies? I think the only one you need to install is https://pypi.org/project/tendo/

[quexten]

(Might be left over in the flatpak package requirements, but the python gui doesn't even use chacha20.)

[Mte90]

Removed that dependency from the requirements.txt, I just get another error but I will do a pr

[quexten]

Removed these dependencies in #100