Remove ctypes setup() dependency, already included in python >= 2.5 and it breaks pypi installs.
Remove ctypes setup() dependency, already included in python >= 2.5
and it breaks pypi installs.

rasata/python-magic,zyberdon/pymagicforandroickmaster,ssmail/python-magic,ssmail/python-magic,rasata/python-magic,zyberdon/pymagicforandroickmaster