ParseFtpDirectoryListing: drop obsolete TODOs
ParseFtpDirectoryListing: drop obsolete TODOs

It is not clear what these meant, and the original author has no memory of them,
so they are unlikely to ever be addressed.

BUG=488592

Review URL: https://codereview.chromium.org/1303693006

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#345054}

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