chore(sdk/go): remove coverage.out from tracking

[rhuss]

Summary

• Remove sdk/go/coverage.out from git tracking. This is a go test -coverprofile artifact that was accidentally committed and should not be in the repo. Already covered by .gitignore line 67.

Related Issue

No issue required. Mechanical cleanup of an accidentally committed test artifact.

Changes

• git rm --cached sdk/go/coverage.out

Testing

• git ls-files sdk/go/coverage.out returns empty after this change
• .gitignore already has coverage.out at line 67, preventing future commits

Checklist

• Change is mechanical (file removal only)
• No code changes
• No issue required

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[rhuss]

@krishicks this file slipped in with 7547edc (although its in the top-level .gitignore). Quick PR to remove it again.

[rhuss]

Thanks to @grs for pointing this out.

[elezar]

/ok-to-test fda8624