Fix redundant imports

Author: wu-hui

packages/firestore/src/local/indexeddb_schema.ts

@@ -19,7 +19,6 @@ import { BatchId, ListenSequenceNumber, TargetId } from '../core/types';
 import { ResourcePath } from '../model/path';
 import { BundledQuery } from '../protos/firestore_bundle_proto';
 import * as api from '../protos/firestore_proto_api';
-import { BundledQuery } from '../protos/firestore_bundle_proto';
 import { hardAssert, debugAssert } from '../util/assert';
 
 import { SnapshotVersion } from '../core/snapshot_version';