psa: remove old event feed items

[feedingit] / psa_harmattan / feedingit / feedingit.desktop

[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Name=FeedingIt RSS Reader
Exec=invoker --single-instance --splash=/usr/share/feedingit/splash.jpg --type=e /usr/bin/python /usr/share/feedingit/feedingit.py
Icon=/usr/share/icons/hicolor/80x80/apps/feedingit.png
Categories=Network;News;