[KYLIN-5052] Clean up unused and out-of-date source code/config

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v4.0.0-beta
• Fix Version/s: v4.0.0
• Skill Level: Committers Level (Medium to Hard)
• Assignee: Xiaoxiang Yu
• Reporter: Xiaoxiang Yu
• Due: 29/Aug/21
• Created: 28/Jul/21 10:33
• Updated: 24/Aug/21 08:19
• Resolved: 24/Aug/21 08:19

Description

There still exists some unused and out-of-date maven module in current development branch, such as core-dictionary, datasource-sdk.

Besides, a lot of UTs is out-of-date and should be ignored, because new storage/build/query engine are used and old ones are removed.

Finally, a lot of configuration entries(kylin.properties) are out-of-date, they should be categorized/removed.