Remove unused translatable strings (#12643)

* Remove unused “salmon_url” string

* Remove more unused translatable strings

The following strings all used to be on the admin account page
but aren't used anymore: profile_url, outbox_url, followers_url, feed_url

config/locales/no.yml

@@ -48,9 +48,7 @@
       email_status: E-poststatus
       enable: Aktiver
       enabled: Aktivert
-      feed_url: Feed-URL
       followers: Følgere
-      followers_url: Følgere URL
       follows: Følginger
       inbox_url: Innboks URL
       ip: IP-adresse
@@ -71,9 +69,7 @@
       most_recent_activity: Nyligste aktivitet
       most_recent_ip: Nyligste IP
       not_subscribed: Ikke abonnért
-      outbox_url: Utboks URL
       perform_full_suspension: Utfør full utvisning
-      profile_url: Profil-URL
       promote: Oppgradere
       protocol: Protokoll
       public: Offentlig
@@ -90,7 +86,6 @@
       roles:
         staff: Personale
         user: Bruker
-      salmon_url: Salmon-URL
       search: Søk
       shared_inbox_url: Delt Innboks URL
       show: