chore: Remove custom client multimodal tests

[randombet]

Why are these changes needed?

Accidentally checked in this test in #2145
This is for my investigation purpose only.

Related issue number

Checks

• I've included any doc changes needed for https://docs.ag2.ai/. See https://docs.ag2.ai/latest/docs/contributor-guide/documentation/ to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[joggrbot]

📝 Documentation Analysis

All docs are up to date! 🎉

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✅ Latest commit analyzed: 9ca6d0f | Powered by Joggr

[claude]

PR Review: Remove custom client multimodal tests

Summary

This PR removes the test file test/oai/test_custom_client_multimodal_integration.py that was accidentally committed in PR #2145. The removal is clean and appropriate.

Code Quality & Best Practices ✅

• Clean deletion: The file is being completely removed with no dangling references
• Proper justification: The author correctly identified this as an investigation/development file that should not have been committed
• No dependencies: Verified that no other files import or reference the classes defined in this test file (RealMultimodalCustomClient, ErrorProneCustomClient, ValidatingCustomClient, PerformanceTrackingClient)

Potential Issues ✅

• No issues found: The file has no external dependencies or references
• Safe to delete: grep searches confirm no other files reference this test module

Performance Considerations ✅

• Positive impact: Removing 498 lines of unused test code will slightly improve test suite performance and reduce maintenance burden

Security Concerns ✅

• No security implications: This is purely a test file removal with no production code changes
• No sensitive data: The file contains only test utilities and mock implementations

Test Coverage ✅

• Investigation code: Based on the PR description and PR feat: Enable list[dict] type for message['content'] for two-agent chat and group chat APIs #2145 context, this appears to be exploratory test code used during development of multimodal list[dict] message content support
• Not reducing coverage: Since this was investigation code, its removal doesn't affect the actual test coverage of production features
• Recommendation: Ensure that the necessary multimodal tests are present in the proper test suite (if they were meant to be integrated from this investigation)

Additional Notes

• The referenced PR feat: Enable list[dict] type for message['content'] for two-agent chat and group chat APIs #2145 ("Enable list[dict] type for message['content']") successfully added multimodal testing support, so this investigation file is no longer needed
• The PR is straightforward and low-risk

Recommendation: APPROVE ✅

This is a clean removal of accidentally committed investigation code. No concerns identified.

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Review generated with assistance from Claude Code

[marklysze]

Thanks @randombet

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
see 41 files with indirect coverage changes

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