utils: flake8 and yapf cleanup
utils: flake8 and yapf cleanup

pass PYTHONPATH for v2x to remove modifying syspath

Signed-off-by: Elms <23ce84ca7a7de9dc17ad8e8b0bbd717d4f9f9884@freshred.net>

SymbiFlow/python-symbiflow-v2x,SymbiFlow/python-symbiflow-v2x