🧹 Remove unused MemoryDiff import from test_versioning.py

[dioncx]

• 🎯 What: Removed the unused import MemoryDiff from tests/test_versioning.py.
• 💡 Why: MemoryDiff was imported but never referenced in the test file, leading to unnecessary dependencies and static analysis warnings.
• ✅ Verification: Ran pytest tests/test_versioning.py to confirm the removal causes no issues and the test_versioning.py tests pass.
• ✨ Result: Improved code cleanliness and maintainability by removing dead code.

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PR created automatically by Jules for task 15827475214174399456 started by @dioncx

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