Update docs/dagster-university/pages/dagster-dbt/lesson-6/2-creating-…

…a-simple-incremental-model.md

Co-authored-by: Tim Castillo <[email protected]>

docs/dagster-university/pages/dagster-dbt/lesson-6/2-creating-a-simple-incremental-model.md

@@ -35,7 +35,6 @@ with
             sum(total_amount) as total_amount,
             sum(total_amount) / count(*) as average_amount,
             sum(case when duration > 30 then 1 else 0 end) / count(*) as pct_over_30_min,
-            mode() within group (order by pickup_zone_id) as busiest_zone_id,
         from trips
         group by all
     )