Reverts "Fixes keyboard selects disabled radio (#176727)"

[auto-submit]

Reverts: #176727

Initiated by: gaaclarke

Reason for reverting: this is making the tree red, example: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_x64%20tool_tests_commands/9129/overview

00:13 +0 -2: loading /Volumes/Work/s/w/ir/x/t/flutter_tools.c9CMKx/flutter_tools_create_test.CWr5PZ/flutter_project/test/flutter_project_method_channel_test.dart [E]                                  
  Failed to load "/Volumes/Work/s/w/ir/x/t/flutter_tools.c
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Original PR Author: chunhtai
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Reviewed By: {justinmc}
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This change reverts the following previous change:
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fixes https://github.com/flutter/flutter/issues/176398

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