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Description
dart:web_sql is no longer supported and is being removed.
In https://dart-review.googlesource.com/c/sdk/+/216080 we disallow importing it and remove all support from compilers and the analyzer. The one remaining step is make the dom scripts stop generating the web_sql library.
If we stop using the script generator, then we can simply delete the generated library instead.
/cc @srujzs