Merged PR 5381: Removes multi-user test on New Dash onboarding

# Description

It doesn't look like the multi-user cases per deal are going to be fixed any time soon.
Also, this test was only covering it for newly onboarded deals, while we have more cases for migrated deals that this test was not covering.

# Checklist

- [X] dbt compiles

Related work items: #30479

models/reporting/general/schema.yml

@@ -2086,10 +2086,6 @@ models:
           Amount of Backend accounts (users) linked to this Deal.
         data_tests:
           - not_null
-          - dbt_expectations.expect_column_values_to_be_between:
-              min_value: 1
-              max_value: 1
-              strictly: false
 
       - name: count_programs_at_deal_level
         data_type: integer