translations: remove duplicated translation file for Norwegian Bokmål and update languages
While trying to add this to Weblate, I noticed that I can not import it as they exists two files for the same language.
According to http://people.skolelinux.org/pere/blog/Spr_kkoder_for_POSIX_locale_i_Norge.html We should be using nb_NO.
Edited by Josef Schlehofer