OO-4870: adjust table columns for LDAP delete users process

src/main/java/org/olat/ldap/ui/DeletStep00.java

@@ -120,7 +120,6 @@ public class DeletStep00 extends BasicStep{
 			
 			FlexiTableColumnModel tableColumnModel = FlexiTableDataModelFactory.createFlexiTableColumnModel();
 			int colPos = 0;
-			tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("username", 10000));
 			for (UserPropertyHandler userProperty : handlers) {
 				tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel(userProperty.i18nColumnDescriptorLabelKey(), colPos++));
 			}

src/main/java/org/olat/ldap/ui/DeletStep01.java

@@ -133,7 +133,6 @@ public class DeletStep01 extends BasicStep {
 
 			FlexiTableColumnModel tableColumnModel = FlexiTableDataModelFactory.createFlexiTableColumnModel();
 			int colPos = 0;
-			tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("username", 10000));
 			List<UserPropertyHandler> handlers = new ArrayList<>();
 			for (String property : reqProberty) {
 				List<UserPropertyHandler> properHandlerList = UserManager.getInstance().getAllUserPropertyHandlers();