Merge pull request #11407 from DANS-KNAW-jp/optimistic-lock

Prevent needless optimistic lock exception for role assignment removal

Author: ofahimIQSS

src/main/java/edu/harvard/iq/dataverse/RoleAssignment.java

@@ -94,8 +94,8 @@ public class RoleAssignment implements java.io.Serializable {
 	@ManyToOne( cascade = {CascadeType.MERGE} )
 	@JoinColumn( nullable=false )
 	private DataverseRole role;
-	
-	@ManyToOne( cascade = {CascadeType.MERGE} ) 
+
+	@ManyToOne
 	@JoinColumn( nullable=false )
 	private DvObject definitionPoint;