Remove duplicated attribute request from ZHA

[abmantis]

Proposed change

The on_off attribute is on the REPORT_CONFIG, so super().async_initialize already requests it from the device.
No need to request it twice. This should make the init of a new device a bit faster.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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• The code change is tested and works locally.
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• Tests have been added to verify that the new code works.

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  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
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[probot-home-assistant]

Hey there @dmulcahey, @Adminiuga, mind taking a look at this pull request as its been labeled with an integration (zha) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[Adminiuga]

you may want to update isort and/or re-run script/setup from core repo. Lint complains on imports order

[abmantis]

@Adminiuga I run isort on the file and it changes, then black complains when the commit hook is run, and changes it back 🤷

[Adminiuga]

Make sure you have the same black version? Try running script/setup from the latest dev branch.

[abmantis]

@Adminiuga yes, just pulled the latest dev and ran script/setup

[abmantis]

The problem was having zigpy dir inside HA repo.

[Adminiuga]

LGTM