package/python-jedi: bump to version 0.17.0

Drop flask license as the old flask theme has been replaced with the
sphinx_rtd_theme since version 0.17.0 and
https://github.com/davidhalter/jedi/commit/8f96cbdabff671325a2987eb23ba91de90381c15



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>