[jira] [Created] (TAJO-1893) Remove unused import

[Dongkyu Hwangbo (JIRA)]

Dongkyu Hwangbo created TAJO-1893:
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             Summary: Remove unused import
                 Key: TAJO-1893
                 URL: https://issues.apache.org/jira/browse/TAJO-1893
             Project: Tajo
          Issue Type: Improvement
            Reporter: Dongkyu Hwangbo
            Assignee: Dongkyu Hwangbo
            Priority: Trivial


current version of TAJO has lots of unused import. We can improve the 
performance of tajo with removing it.



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