fix: Remove pytest-mock from dependencies (#99)

- Removed pytest-mock>=3.10.0 from dev dependencies
- All mock usage has been eliminated from the codebase
- Tests run successfully without pytest-mock
- NO MOCKS policy is now fully enforced in dependencies

This completes the cleanup of mock-related dependencies.

Author: jeremymanning

pyproject.toml

@@ -58,7 +58,6 @@ dev = [
     "pytest>=7.0.0",
     "pytest-asyncio>=0.21.0",
     "pytest-cov>=4.0.0",
-    "pytest-mock>=3.10.0",
     "black>=22.0.0",
     "isort>=5.10.0",
     "flake8>=4.0.0",