[SPARK-45295] Remove Utils.isMemberClass workaround for JDK 8

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0
• Component/s: Spark Core, SQL
• Labels: pull-request-available
• Assignee: Hyukjin Kwon
• Reporter: Hyukjin Kwon
• Created: 25/Sep/23 02:36
• Updated: 25/Sep/23 13:18
• Resolved: 25/Sep/23 13:18

Description

We dropped JDK 8 and 11 at SPARK-44112. We don't need the workaround anymore

Issue Links

• links to: GitHub Pull Request #43080