sunjincheng created FLINK-6406:
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Summary: Cleanup useless import
Key: FLINK-6406
URL: https://issues.apache.org/jira/browse/FLINK-6406
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Affects Versions: 1.3.0
Reporter: sunjincheng
Assignee: sunjincheng
When browsing the code, it is found that there are some useless reference in
the following file which need cleanup.
*packages.scala
*ExternalCatalogTable
*arithmetic.scala
*array.scala
*ColumnStats
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