fix: remove suppression of pydantic warnings in _invoke function

[Amir-R25]

What does this add?

Closes #220. LiteLLM merged a fix for the pydantic warnings and therefore there is no a longer a need for filtering warnings: BerriAI/litellm#18972

Type of changes

Please check the type of change your PR introduces:

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update (improvements or corrections to documentation)
• 🎨 Code style/formatting (changes that do not affect the meaning of the code)
• ♻️ Refactoring (code change that neither fixes a bug nor adds a feature)
• ⚡ Performance improvement (code change that improves performance)
• ✅ Test update (adding missing tests or correcting existing tests)
• 🔧 Build/CI changes (changes to build process or continuous integration)
• 🗑️ Chore (other changes that don't modify src or test files)

[soulFood5632]

Superb