Remove SHOUTY BANNERS

[SuperWig]

Continuation of #2072. I kept getting issues with the uppercase name of the branch so I renamed it. Didn't think it would close the PR 😕.

Fixes #306

[SuperWig]

That is almost all of them now. Will finish up tomorrow along with fixing my inevitable mistakes.

[CaseyCarter]

This is mostly looking good, just a few places where the comment was GARBAGE name [other stuff..] for which I think the [other stuff...] was just barely useful enough to keep.

[fsb4000]

add

Fixes #306

to your first comment.

[AlexGuteniev]

I think some macro comments should be preserved. They give non obvious context, since macros lack type system, and these particular are not even verbose.

[StephanTLavavej]

Thanks - I'll go ahead and push minor changes.

[StephanTLavavej]

Ok, I've pushed a merge with main (trivial to resolve - recent PRs added/altered code around stable name removals) and the following:

• Restore stable names for optional and variant.
• In variant/optional, drop more shouty banners but keep stable names.
• Remove many more shouty banners.
• Rework shouty banners to preserve info.

In optional and variant I'd be happy to remove those stable name citations entirely, but as some were already present with lowercase comments like:

STL/stl/inc/variant

Line 1089 in 6a53cf2

// assignment [variant.assign]

I felt it was more consistent to keep them for now.

[StephanTLavavej]

Removed the optional/variant stable name comments (including the ones of the form // assignment [optional.object.assign]) after @CaseyCarter confirmed they weren't desired.

[StephanTLavavej]

THANKS FOR CLEANING UP THESE COMMENTS! 😹