remove deep_sleep binary_sensor from fressnapf_tracker

[eifinger]

Proposed change

Old app versions are using deep sleep but the backend does not support this anymore.
It got replaced by energy_saving. The app still calls it "Sleep mode".

I will implement Sleep mode / energy saving in the switch platform.

Since this integration is not yet released I do not consider this a breaking change.

Sorry for the additional work.

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)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: remove deep_sleep binary_sensor from fressnapf_tracker home-assistant.io#42119
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
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• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

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

• The manifest file has all fields filled out correctly.
  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.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[Copilot]

Pull request overview

This PR removes the deprecated deep_sleep binary sensor from the fressnapf_tracker integration. The backend service no longer supports this field, and it will be replaced by an energy_saving feature in the switch platform. Since the integration hasn't been released yet, this is not considered a breaking change.

Key changes:

• Removed deep_sleep binary sensor entity description from the binary_sensor platform
• Cleaned up related translation strings
• Updated test snapshots to reflect the removal

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
homeassistant/components/fressnapf_tracker/binary_sensor.py	Removed the deprecated deep_sleep binary sensor entity description
homeassistant/components/fressnapf_tracker/strings.json	Removed the deep_sleep translation key from the entity section
tests/components/fressnapf_tracker/snapshots/test_binary_sensor.ambr	Removed snapshot test data for the deep_sleep binary sensor entity