Unused strings

[comradekingu]

https://hosted.weblate.org/translate/icinga-editor/translations/nb_NO/?checksum=ac779a00ed33e7f6

is not in https://github.com/VitexSoftware/Icinga-Editor/blob/master/src/hosts.php

[comradekingu]

Pushing is not set up, and hasn't been done manually in quite a while
https://hosted.weblate.org/projects/icinga-editor/translations/#alerts