[SPARK-43576] Remove unused declarations from Core module

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.5.0
• Fix Version/s: 3.5.0
• Component/s: Spark Core
• Assignee: Pan Bingkun
• Reporter: Pan Bingkun
• Created: 18/May/23 11:57
• Updated: 26/May/23 07:20
• Resolved: 26/May/23 07:20

Description

There are some unused declarations in the `core` module, and we need to clean it to make code clean.

Issue Links

• links to: [Github] Pull Request #41218 (panbingkun)