SIENTIAPDE-1712

Remove code validation script and refactor imports in activities and workflows

- Deleted the `validate.sh` script, which was responsible for running code quality checks.
- Cleaned up import statements in `activities.py`, `gates.py`, `mlflow.py`, and `storage.py` by removing unused imports and organizing them.
- Refactored initialization methods in `MinioManager` and `MLFlow` classes for improved readability.
- Updated various workflows to ensure compatibility with the new structure and removed unnecessary comments.
- Enhanced test cases to accommodate changes in the activities and workflows, ensuring proper mocking of dependencies.

laborious/activities/activities.py

@@ -14,7 +14,6 @@ with workflow.unsafe.imports_passed_through():
     from laborious.activities.model_metrics import ModelMetrics
     from laborious.activities.opc import OPC
     from laborious.activities.storage import Storage
-    
 
 
 class Activities(Storage, MLFlow, Gates, OPC, ModelMetrics, API):