cleanup: remove adaptive las N config option
cleanup: remove adaptive las N config option

The feature has been replaced so the option no longer applies.

jitsi/lib-jitsi-meet,damencho/lib-jitsi-meet,adambowles/lib-jitsi-meet,adambowles/lib-jitsi-meet,jiyeyuran/lib-jitsi-meet,jitsi/lib-jitsi-meet,nevermind-corp/ljm