Bugfix ZHA device_removed() handler.

[Adminiuga]

Description:

Bugfix ZHA device_removed() handler.

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly (example).
• New dependencies have been added to requirements in the manifest (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

[github-actions]

Hey there @dmulcahey, mind taking a look at this pull request as its been labeled with a integration (zha) you are listed as a codeowner for? Thanks!

[dmulcahey]

Can merge when build passes