Removed Elasticsearch and Opensearch channel index schedma check (#30102)

server/channels/app/user.go

@@ -2922,13 +2922,3 @@ func (a *App) UserIsFirstAdmin(rctx request.CTX, user *model.User) bool {
 
 	return true
 }
-
-func (a *App) getAllSystemAdmins() ([]*model.User, *model.AppError) {
-	userOptions := &model.UserGetOptions{
-		Page:     0,
-		PerPage:  500,
-		Role:     model.SystemAdminRoleId,
-		Inactive: false,
-	}
-	return a.GetUsersFromProfiles(userOptions)
-}