style: Remove unnecessary commas

[sorairolake]

Looking at other codes, it seems better to eliminate these commas. So I'm going to remove these commas.

[jhpratt]

This likely isn't exhaustive, as I'm pretty sure I've run across more than just these in passing. Can you be sure that it is?

[sorairolake]

@jhpratt This is applied to lines which match rg -F "),)". So I cannot be sure that this is exhaustive, and I don't think this likely is exhaustive.

First, I discovered a redundant comma in the following doctest:

time/time/src/offset_date_time.rs

Line 77 in 2e68a36

/// assert_eq!(OffsetDateTime::UNIX_EPOCH, datetime!(1970-01-01 0:00 UTC),);

Next, I ran rg -F "),)" and discovered a similar redundant comma in the following line:

time/time/src/serde/mod.rs

Line 208 in 2e68a36

#[cfg(all(feature = "macros", any(feature = "formatting", feature = "parsing"),))]

[jhpratt]

If cleanup like this is being done, I'd like to be at least reasonably confident that it is exhaustive, lest we have a number of PRs substantially similar to this.

[jhpratt]

@sorairolake What's the status of this?

[sorairolake]

@jhpratt I'm not confident that I can do cleanups like this thoroughly.

[jhpratt]

Closing for that reason. I'll probably end up digging through code myself with some more complicated regex in the near future.