chore: Remove setup.py #661

Job	Run time
flutter_e2e_test (ubuntu-latest, flutter-android)	5m 6s
android_test (test/functional/android/appium_service_tests.py test/functional/android/chrome_test...	3m 50s
flutter_e2e_test (macos-15, flutter-ios)	16m 40s
ios_test (test/functional/ios/safari_tests.py, func_test_ios1)	31m 29s
	57m 5s

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