[AMORO-2440] Fix the batch deletion of Change Store files for Mixed F…

…ormat Table (apache#2439)

fix remove change files

ams/server/src/main/java/com/netease/arctic/server/optimizing/maintainer/MixedTableMaintainer.java

@@ -452,7 +452,7 @@ private void tryClearChangeFiles(List<DataFile> changeFiles) {
           LOG.info("{} delete {} change files", unkeyedTable.name(), tableFiles.size());
           if (!tableFiles.isEmpty()) {
             DeleteFiles changeDelete = unkeyedTable.newDelete();
-            changeFiles.forEach(changeDelete::deleteFile);
+            tableFiles.forEach(changeDelete::deleteFile);
             changeDelete.commit();
           }
           LOG.info(