[ADAP-478] Remove Databricks specific tests

### High Level Task
Remove the Databricks profiles from `dbt-spark` integration tests.

### Acceptance Criteria
- [ ] Profiles for `databricks_sql_endpoint`, `databricks_sql_endpoint` and `databricks_http_cluster` are removed from codebase
- [ ] All decorators are updated to reflect the removal of above profiles
- [ ] All tests that should be removed are fully removed

### Details
This is a bit complex since tests are tagged to be skipped, not to be run. The tests that need to be fully removed are the ones that have the following decorator:

```python
@pytest.mark.skip_profile("spark_session", "apache_spark")
```

If the decorator contains `databricks_sql_endpoint`, `databricks_sql_endpoint` or `databricks_http_cluster` the decorator just need to be modified.

[conftest.py](https://github.com/dbt-labs/dbt-spark/blob/main/tests/conftest.py) also needs to be modified to remove the databricks profiles.

### Additional Notes
Since we will be removing the Databricks profiles in the GitHub Action, this will be dead code but the tests will continue to work.