Remove Hardcoded nlsub release Filter

I don't think that a hardcoded nlsub filter for releases is useful. Many release especially web-dl 1080p are only released as nlsub on usenet. This is not a problem since 99,9% of nlsub releases are soft-subbed. With this hardcoded filter many available releases won't be downloaded.

If someone really doesn't want nlsubbed releases he can add nlsub(bed|s)? as a ignore word in the ignore word list in the config menu -> Search Settings.