Remove search_mode param to providers search method

sickbeard/providers/alpharatio.py

sickbeard/providers/animenzb.py

sickbeard/providers/bitcannon.py

sickbeard/providers/bitsnoop.py

sickbeard/providers/bitsoup.py

sickbeard/providers/bluetigers.py

sickbeard/providers/btdigg.py

sickbeard/providers/btn.py

sickbeard/providers/cpasbien.py

sickbeard/providers/elitetorrent.py

sickbeard/providers/extratorrent.py

sickbeard/providers/fnt.py

sickbeard/providers/freshontv.py

sickbeard/providers/gftracker.py

sickbeard/providers/hdbits.py

sickbeard/providers/hdspace.py

sickbeard/providers/hdtorrents.py

sickbeard/providers/hounddawgs.py

sickbeard/providers/iptorrents.py

sickbeard/providers/kat.py