Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/16783
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GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/16783
[SPARK-19441] [SQL] Remove IN type coercion from PromoteStrings
### What changes were proposed in this pull request?
The removed codes are not reachable, because `InConversion` already resolv
