python2 removed

[Jon Turney]

Python 2.7 is the last python2 version, which was sunset on January 1, 
2020 [1][2].

Only three and a half years later, I've removed the packages for the 
python2 interpreter: python{,2,27}-{,devel,test,tkinter} and idle{,2,27}

python2 will continue to work where already installed, but it will not 
be possible to install it, or any packages which depend upon it.

Work has been done to identify and update the packages which need 
rebuilding for python3, but not all effected packages have yet been updated.

If those packages are important to you, please consider helping us bring 
them up to date [3].

[1] https://www.python.org/doc/sunset-python-2/
[2] https://endoflife.date/python
[3] https://cygwin.com/packaging-contributors-guide.html#adopt