Temporarily remove the zstd buildlink as py-zstandard includes
its own version that it wants to use. Future versions will
support using a system supplied zstd but this one doesn't yet.
Also prevent setup.py from picking up cffi by accident so the
PLIST is stable.
This project provides Python bindings for interfacing with the
Zstandard compression library. A C extension and CFFI interface are
provided.
The primary goal of the project is to provide a rich interface to
the underlying C API through a Pythonic interface while not sacrificing
performance. This means exposing most of the features and flexibility
of the C API while not sacrificing usability or safety that Python
provides.
