Remove the setuptools and CFFI requirements, which break pip install -U
Remove the setuptools and CFFI requirements, which break pip install -U

PyPy ships with CFFI, but pip install -U will upgrade it if a newer CFFI
is available, which will break the CFFI installation (and PyPy itself).

sholsapp/cryptography,Hasimir/cryptography,skeuomorf/cryptography,sholsapp/cryptography,bwhmather/cryptography,Hasimir/cryptography,sholsapp/cryptography,kimvais/cryptography,skeuomorf/cryptography,skeuomorf/cryptography,kimvais/cryptography,Ayrx/cryptography,sholsapp/cryptography,kimvais/cryptography,kimvais/cryptography,Ayrx/cryptography,skeuomorf/cryptography,bwhmather/cryptography,bwhmather/cryptography,Hasimir/cryptography,Ayrx/cryptography,Ayrx/cryptography,Hasimir/cryptography,bwhmather/cryptography