[FLINK-6304] Clear a lot of useless import

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Implemented
• Fix Version/s: 1.3.0
• Component/s: Table SQL / API
• Assignee: sunjincheng
• Reporter: sunjincheng
• Created: 13/Apr/17 09:51
• Updated: 14/Apr/17 00:32
• Resolved: 14/Apr/17 00:32

Description

There are some classes(as follow) have useless import, I want clear them before release 1.3.

DataSetSlideTimeWindowAggFlatMapFunction
CommonScan
FlinkRel
StreamTableSourceScanRule
DataStreamOverAggregateRule
DataStreamAggregateRule

Issue Links

• links to: GitHub Pull Request #3717