python/Makefile: remove PEP8 checks
python/Makefile: remove PEP8 checks

(we are NOT following PEP8 exactly, see the custom pylint.rc...)

Notable excpetions:
 - allow use of small variable names (p for project, f for file, and so on)
 - allow use of long lines

aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild