tools: simplify the format api to remove unnecessary xfrom related logic

[wbpcode]

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Commit Message: tools: simplify the format api to remove unnecessary xfrom related logic Additional Description:

Now the xformed dep make no sense because its content is not used in the formatting. It's very helpful and make big help when we migrate from v2 -> v3. But now, it's time to clean up this unneessary logic.

This PR change updated some logic of format api script. And I will create a PR to clean up all other xformed things after this PR is merged.

Risk Level: low. Testing: n/a. Docs Changes: n/a. Release Notes: n/a. Platform Specific Features: n/a.