fix: Clean up and standardize test code formatting

### Summary of Changes
- Removed unnecessary blank lines and standardized import statements across test files.
- Ensured consistent use of quotes in patch decorators and improved formatting of test data structures.
- Enhanced readability and maintainability of test code by applying clean code principles.

### Expected Results
- Improved clarity and consistency in test code, facilitating easier understanding and future modifications.

services/service-adapters/tests/test_main.py

@@ -1,7 +1,7 @@
 """
 Tests for the main FastAPI application
 """
-import pytest
+
 from fastapi.testclient import TestClient
 
 from main import app
@@ -30,12 +30,12 @@ class TestMainApp:
         """Test that all routers are included"""
         # Check that all expected routes are available
         routes = [route.path for route in app.routes]
-        
+
         # General routes
         assert "/" in routes
         assert "/health" in routes
         assert "/services" in routes
-        
+
         # Other service routes should be included
         # (exact paths depend on router definitions)
 
@@ -43,7 +43,7 @@ class TestMainApp:
         """Test that OpenAPI documentation is available"""
         response = client.get("/docs")
         assert response.status_code == 200
-        
+
         response = client.get("/openapi.json")
         assert response.status_code == 200
         assert "openapi" in response.json()