Currently on my development machine there are fiew packages installed from pip:
drwxr-sr-x  2 root staff  4096 Feb 21 15:37 django_photologue-2.6.1.egg-info
drwxr-sr-x  2 root staff  4096 Mar  5 10:03 GeoNode-2.0.egg-info
drwxr-sr-x  2 root staff  4096 Mar 31 07:51 openquakeplatform-0.1.egg-info
drwxr-sr-x  2 root staff  4096 Feb 21 15:38 Pillow-2.3.0.egg-info
drwxr-sr-x  2 root staff  4096 Mar  6 13:37 requests-2.2.1.egg-info
drwxr-sr-x  2 root staff  4096 Feb 21 15:37 South-0.8.4.egg-info

Probably we could remove easily requests-2.2.1.egg-info, we discuss about others