Loading a component defined in a registration didn't actually work and was undocumented, so let's just remove it instead of fixing #23005.
## Checklist:
- [X] The code change is tested and works locally.
- [X] Local tests pass with `tox`. **Your PR cannot be merged unless tests pass**
- [X] There is no commented out code in this PR.
* Load dependencies from manifests. Fallback to current DEPENDENCIES
* Fix typing
* Ignore typing correctly
* Split out dependency processing to a new method
* Fix tests
* Only pull from manifest if dependencies is non empty
* Inline temporary function
* Fix light tests [skip ci]
* Fix tests/common
* Fix some mqtt tests [skip ci]
* Fix tests and component manifests which have only one platform
* Fix rflink tests
* Fix more tests and manifests
* Readability over shorthand format
* Fix demo/notify tests
* Load dependencies from manifests. Fallback to current DEPENDENCIES
* Load requirements from manifests. Fallback to current REQUIREMENTS
* Fix typing
* Ignore typing correctly
* Split out dependency processing to a new method
* Only pull from manifest if dependencies is non empty
* Inline temporary function
* Fix tests and component manifests which have only one platform
* Fix rflink tests
* Readability over shorthand format
* Clean up requirements
* Use integration to resolve deps/reqs
* Lint
* Lint
* revert a change
* Revert a test change
* Fix types
* Fix types
* Add back cache for load component
* Fix test_component_not_found
* Move light.test and device_tracker.test into test package instead with manifest to fix tests
* Fix broken device_tracker tests
* Add docstrings to __init__
* Fix all of the light tests that I broke earlier
* Embed the test.switch platform to fix other tests
* Embed and fix the test.imagimage_processing platform
* Fix tests for nx584
* Add dependencies from platform file's DEPENDENCIES
* Try to setup component when entity_platform is setting up
Fix tests in helpers folder
* Rewrite test_setup
* Simplify
* Lint
* Disable demo component if running in test
Temp workaround to unblock CI tests
* Skip demo tests
* Fix config entry test
* Fix repeat test
* Clarify doc
* One extra guard
* Fix import
* Lint
* Workaround google tts
* Logi Circle now uses OAuth2 for authentication, added config flow.
* Service calls now dispatched to camera entities via signalled events
* Update from PR review
* Add unit tests for config flow
* Updated CODEOWNERS
* Reverted change to .coveragerc
* Improved test coverage of config flow
* Fix light tests [skip ci]
* Fix tests/common
* Fix some mqtt tests [skip ci]
* Fix tests and component manifests which have only one platform
* Fix more tests and manifests
* Fix demo/notify tests
* Rollback test for demo.geo_location
* Added option to use manual authentication for google hangout component
See: https://hangups.readthedocs.io/en/latest/user_guide.html#logging-in for manual log in example
Bumped up version of hangups to 0.4.9
* Updated components/hangouts/strings.json and generated translation string by running script/translations_develop
Reduced verbosity of modifications to components/hangouts/config_flow.py
* Added option to use manual authentication for google hangout component
See: https://hangups.readthedocs.io/en/latest/user_guide.html#logging-in for manual log in example
Bumped up version of hangups to 0.4.9
* Updated components/hangouts/strings.json and generated translation string by running script/translations_develop
Reduced verbosity of modifications to components/hangouts/config_flow.py
* fixing missing rebase
* Store gateways inside a dict in deconz domain
* Make reachable events gateway specific
* Gateway shall always exist
* Adapt new device signalling to support multiple gateways
* Services follow gateway master
* Working on unload entry
* Make unload and master handover work
Improve tests for init
* Fix config flow
* Fix linting
* Clean up init tests
* Clean up hassio discovery to fit with the rest
* Store gateways inside a dict in deconz domain
* Make reachable events gateway specific
* Gateway shall always exist
* Adapt new device signalling to support multiple gateways
* Services follow gateway master
* Working on unload entry
* Make unload and master handover work
Improve tests for init
* Fix config flow
* Fix linting
* Clean up init tests
* Clean up hassio discovery to fit with the rest
* Add support for services to specify bridgeid
* Raise ConfigEntryNotReady for connection exception
Raise ConfigEntryNotReady for the connection exception like if the MQTT Server container/device is being restarted or was unavailable on boot.
* Add new exception
* grammar fix
* Possibly resolve hound comments
* raise `ConfigEntryNotReady` for mqtt connection error
* revert exceptions.py
* Update exceptions.py
* modify test to handle exception
* use constants to control exception scope
* Raise ConfigEntryNotReady for connection exception
Raise ConfigEntryNotReady for the connection exception like if the MQTT Server container/device is being restarted or was unavailable on boot.
* Add new exception
* Add new exception
* grammar fix
* Possibly resolve hound comments
* raise `ConfigEntryNotReady` for mqtt connection error
* revert exceptions.py
* Update exceptions.py
* modify test to handle exception
* use constants to control exception scope
* revert test change as it's not the same thing
* Update test_init.py
* Add test for MQTT OSError
* revert file changes from a bad rebase
* Rewrite test with valid syntax
* rewrite test to be less ambiguous
* add empty line
* add back 'axis'
* Remove empty line
* Update tests and undo merge from earlier
* correctly restore test for no connect broker
* fix test mock correctly
* line was too long. hit enter.
* Add mobile_app notify platform
* Requested changes
* Fix incorrect param for status code
* Move push_registrations to notify platform file
* Trim down registration information sent in push
* quotes
* Use async version of load_platform
* Add warning for duplicate device names
* Switch to async_get_service
* add mobile_app.notify test
* Update tests/components/mobile_app/test_notify.py
* Update tests/components/mobile_app/test_notify.py
* [Hue API] Add color support
Adds color support to the hue api (specifically hue/saturation). Switched from using a tuple to convey state internally to using a dict to make adding new fields easier.
* [Hue API] Add unit test for color support
