Fix CI: remove redundant dbt test command and unused imports

- Remove 'dbt test' from workflow (dbt build already runs tests)
- Remove unused pytest import from conftest.py
- Tables are in-memory and disappear after dbt build completes

Signed-off-by: yassinnouh21 <[email protected]>

Author: YassinNouh21

.github/workflows/dbt-integration-tests.yml

@@ -43,7 +43,6 @@ jobs:
           cd sdk/python/tests/integration/dbt/test_dbt_project
           dbt deps
           dbt build
-          dbt test
       
       - name: Setup Feast project for dbt import test
         run: |

sdk/python/tests/integration/dbt/conftest.py

@@ -4,7 +4,5 @@
 This is a standalone conftest that doesn't depend on the main Feast test infrastructure.
 """
 
-import pytest
-
 # This conftest is minimal and doesn't import the main feast conftest
 # to avoid complex dependency chains for dbt-specific tests