This reverts commit 90028813a8.
This change caused a few bots to fail with 'JSON-RPC error 110: Extension error', which is odd because _getUnusedChangesInLastReload is not an extension.
Flutter tools
Tools for building Flutter applications.
To run the tests, ensure that no devices are connected,
then navigate to flutter_tools and execute:
../../bin/cache/dart-sdk/bin/pub run test