Remove TODO comments

[jpjjulie]

Description

Checklist

If you're unsure about a box, leave it unchecked. A maintainer will help you.

• I understand README.md. I also understand that acceptance of
  community PRs will be delayed until the test and CI systems are online.
• Identifiers in product code changes are properly _Ugly as per
  https://eel.is/c++draft/lex.name#3.1 or there are no product code changes.
• The STL builds successfully and all tests have passed (must be manually
  verified by an STL maintainer before CI is online, leave this unchecked for
  initial submission).
• These changes introduce no known ABI breaks (adding members, renaming
  members, adding virtual functions, changing whether a type is an aggregate
  or trivially copyable, etc.).
• These changes were written from scratch using only this repository and
  the C++ Working Draft as a reference (and any other cited standards).
  If they were derived from a project that's already listed in NOTICE.txt,
  that's fine, but please mention it. If they were derived from any other
  project (including Boost and libc++, which are not yet listed in
  NOTICE.txt), you must mention it here, so we can determine whether the
  license is compatible and what else needs to be done.

[msftclas]

All CLA requirements met.

[StephanTLavavej]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[BillyONeal]

Hmmm... not sure how I feel about the ones from upstream. Won't that make it more difficult to follow upstream changes?

[StephanTLavavej]

I maintain a massive amount of diffs relative to upstream (notably, making every identifier __ugly and adding bounds checking and fixed notation). These comments are trivial to deal with.

At this time, I haven't documented the process for staying in sync with upstream, but the commits are in https://github.com/StephanTLavavej/ryu/commits/msvc-latest .

[StephanTLavavej]

Thanks for improving the IDE experience for users of the STL, and congrats on your first commit here!

(@CaseyCarter, you approved the Microsoft-internal port of this change, so I went ahead and merged this.)

[CaseyCarter]

@CaseyCarter, you approved the Microsoft-internal port of this change, so I went ahead and merged this.

Yes, sorry - I thought I had approved this PR when approving the internal port.