KYLIN-4985 optimize kylin planner by delete unnecessary cuboids

[MorningLight5]

Proposed changes

https://issues.apache.org/jira/browse/KYLIN-4985

Types of changes

• [x] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation Update (if none of the other choices apply)

Checklist

• [x] I have create an issue on Kylin's jira, and have described the bug/feature there in detail
• [ ] Commit messages in my PR start with the related jira ID, like "KYLIN-0000 Make Kylin project open-source"
• [ ] Compiling and unit tests pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] If this change need a document change, I will prepare another pr against the document branch
• [ ] Any dependent changes have been merged

[hit-lacus]

Hi @kyotoYaho , could you please help to review this PR? Thx.