community/py3-pathlib2: drop obsolete dependency on py3-scandir
py3-scandir is a backport of a module from python3 3.5 and above to python3 3.4 and below and python2.
We are on python3 3.7
py3-scandir is a backport of a module from python3 3.5 and above to python3 3.4 and below and python2.
We are on python3 3.7