Remove unsupported attributes when they become supported

[dmulcahey]

This PR removes unsupported attributes if they become supported in the future. This can be from a firmware update or a quirk update etc.

@puddly let me know if you want to do this differently. I think I covered everything. I have an outstanding note in one of the tests for something that is a bit confusing.

[codecov-commenter]

Codecov Report

Base: 99.63% // Head: 99.63% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (179b82a) compared to base (8a2c754).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1091   +/-   ##
=======================================
  Coverage   99.63%   99.63%           
=======================================
  Files          46       46           
  Lines        7590     7675   +85     
=======================================
+ Hits         7562     7647   +85     
  Misses         28       28           

Impacted Files	Coverage Δ
zigpy/appdb.py	99.36% <100.00%> (+<0.01%)	⬆️
zigpy/zcl/__init__.py	99.76% <100.00%> (+0.01%)	⬆️
zigpy/ota/image.py	100.00% <0.00%> (ø)
zigpy/ota/__init__.py	100.00% <0.00%> (ø)
zigpy/config/__init__.py	100.00% <0.00%> (ø)
zigpy/config/defaults.py	100.00% <0.00%> (ø)
zigpy/ota/provider.py	99.78% <0.00%> (+0.02%)	⬆️

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