Build: Integrate Scalafix to auto-fix unused Scala imports#15676

jackylee-ch wants to merge 2 commits intoapache:mainapache/iceberg:mainfrom

jackylee-ch:apply_scalafix_to_autofix_unused_importsjackylee-ch/incubator-iceberg:apply_scalafix_to_autofix_unused_importsCopy head branch name to clipboard