Cleanup and mostly delete this repo

[Tim 'mithro' Ansell]

It is my understanding that this form of Yosys is no longer needed as everything has been merged upstream or moved into yosys-symbiflow-plugins.

We should thus cleanup this repository and make it an exact mirror of the YosysHQ/Yosys repo.

[Tim 'mithro' Ansell]

@kgugala

[Johan Euphrosine]

we could also archive it, https://docs.github.com/en/repositories/archiving-a-github-repository/archiving-repositories

GitHub Docs

Archiving repositories - GitHub Docs

You can archive a repository to make it read-only for all users and indicate that it's no longer actively maintained. You can also unarchive repositories that have been archived.

[Adam Jeliński]

The symbiflow-yosys package is no longer built by the https://github.com/hdl/conda-eda CI so I guess this repository can be safely removed or archived.

GitHub

GitHub - hdl/conda-eda: Conda recipes for FPGA EDA tools for simulation, synthesis, place and route and bitstream generation.

Conda recipes for FPGA EDA tools for simulation, synthesis, place and route and bitstream generation. - GitHub - hdl/conda-eda: Conda recipes for FPGA EDA tools for simulation, synthesis, place and...