Remove deprecated components for 0.6.0

[RdoubleA]

Context

What is the purpose of this PR? Is it to

• add a new feature
• fix a bug
• update tests and/or documentation
• other (please add here)

Removing methods/classes that were marked deprecated in the previous release

Changelog

What are the changes made in this PR?
*

Test plan

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• run pre-commit hooks and linters (make sure you've first installed via pre-commit install)
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• update docstrings for any new or updated methods or classes
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• manually run any new or modified recipes with sufficient proof of correctness
• include relevant commands and any other artifacts in this summary (pastes of loss curves, eval results, etc.)

UX

If your function changed a public API, please add a dummy example of what the user experience will look like when calling it.
Here is a docstring example
and a tutorial example

• I did not change any public API
• I have added an example to docs or docstrings

[pytorch-bot]

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As of commit 037e2d3 with merge base d7afc40 ():
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