[MM-53702] Remove Downgrade Team Selection modal and all accompanying logic (#24059)

* Remove Downgrade Team Selection modal and all accompanying logic

* fix linter

* Fix i18n

* Final pipeline fixes

webapp/platform/client/src/client4.ts

@@ -1172,13 +1172,6 @@ export default class Client4 {
         );
     }
 
-    archiveAllTeamsExcept = (teamId: string) => {
-        return this.doFetch<StatusOK>(
-            `${this.getTeamRoute(teamId)}/except`,
-            {method: 'delete'},
-        );
-    }
-
     updateTeam = (team: Team) => {
         this.trackEvent('api', 'api_teams_update_name', {team_id: team.id});