Knock 'daemon' out of setuptools requirements, as upstream did

Knock 'daemon' out of setuptools requirements, as upstream did

http://pkgs.fedoraproject.org/cgit/fedmsg.git/commit/?id=5c6c5f802925983286f9388e9582bd48c0cc2521

this solves some startup errors:

 # sudo -u fedmsg fedmsg-relay
Traceback (most recent call last):
  File "/usr/bin/fedmsg-relay", line 9, in <module>
    load_entry_point('fedmsg==0.16.2', 'console_scripts', 'fedmsg-relay')()
  File "/usr/share/python2.7/site-packages/pkg_resources/__init__.py", line 558, in load_entry_point
  File "/usr/share/python2.7/site-packages/pkg_resources/__init__.py", line 2682, in load_entry_point
  File "/usr/share/python2.7/site-packages/pkg_resources/__init__.py", line 2354, in load
  File "/usr/share/python2.7/site-packages/pkg_resources/__init__.py", line 2371, in require
  File "/usr/share/python2.7/site-packages/pkg_resources/__init__.py", line 839, in resolve
pkg_resources.DistributionNotFound: The 'daemon' distribution was not found and is required by the application