python-setuptools: remove

This is identical to the version now in OE-Core except for the
NATIVE_INSTALL_WORKS line and that variable is no longer used, so remove
this recipe.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>