Remove AndroidViewController.id deprecation

[Piinks]

This removes the id getter from

• AndroidViewController
• TextureAndroidViewController
• SurfaceAndroidViewController

The replacement for which is viewId. This is supported by dart fix.

These deprecations have expired, as laid out in flutter.dev/go/deprecations-removed-after-2-5

Part of #90287

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
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• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making or feature I am adding, or Hixie said the PR is test-exempt.
• All existing and new tests are passing.

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[flutter-dashboard]

It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

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[goderbauer]

LGTM

[fluttergithubbot]

This pull request is not suitable for automatic merging in its current state.

• The status or check suite Linux android views has failed. Please fix the issues identified (or deflake) before re-applying this label.

[fluttergithubbot]

This pull request is not suitable for automatic merging in its current state.

• This commit is not mergeable. Please rebase your PR.