v4.6 -1 (#459)

packages/service/core/dataset/file/controller.ts

@@ -0,0 +1,9 @@
+import { BucketNameEnum } from '@fastgpt/global/common/file/constants';
+import { getGFSCollection } from '../../../common/file/gridfs/controller';
+
+export async function delDatasetFiles({ datasetId }: { datasetId: string }) {
+  const db = getGFSCollection(BucketNameEnum.dataset);
+  await db.deleteMany({
+    'metadata.datasetId': String(datasetId)
+  });
+}