Github user wangyum commented on the issue:
https://github.com/apache/spark/pull/22570
What do we do next?
1. Change `level` to `warning`and commit all changes. In this case
`dev/scalastyle` can pass, but IDEA will have a warning:

2. Remove `EmptyInterpolatedStringChecker` and commit all changes.
3. Just close this PR.
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