[docs] Merge and clean up datetime docs

[ggdouglas]

Part of #7293

Proposed changes

Updates datetime docs to reflect new components ported from datetime2. Also deletes docs in datetime2.

Checklist

• Includes tests
• Update documentation

Reviewers should focus on:

Datetime docs should be logically consistent and current. There should be no broken links or references to old/outdated patterns from the legacy datetime components.

[svc-palantir-github]

Update datetime examples in demo-app

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.

[svc-palantir-github]

Update datetime examples in demo-app

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.

[svc-palantir-github]

Update datetime docs

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.

[svc-palantir-github]

Update datetime docs

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.

[jscheiny]

One minor comment

[jscheiny]

Do we still care about sharing this information? This feels like is only relevant when comparing datetime and datetime2.

[ggdouglas]

Yeah, fair question. I kept the references around since we explicitly mentioned it on the original DatePicker docs:

blueprint/packages/datetime/src/components/date-picker/datepicker.md

Lines 21 to 22 in d356c8e

	**DatePicker** renders a UI to choose a single date and (optionally) a time of day. It is built on top of the
	[**react-day-picker** library](https://github.com/gpbl/react-day-picker). Time selection is enabled by the

Perhaps we can keep that reference in the updated docs and remove it for the other components.

Edit: 487fa1d

Invalidated by push of 487fa1d

[svc-palantir-github]

docs: Remove react-day-picker reference from DateInput/DateRangeInput

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.