remove unnecessary changes

src/server/routes/apiv3/import.js

@@ -244,8 +244,7 @@ module.exports = (crowi) => {
     catch (err) {
       logger.error(err);
       this.adminEvent.emit('onErrorForImport', { message: err.message });
-      return res.apiv3Err(err);
-      // return;
+      return;
     }
 
     // generate maps of ImportSettings to import

src/server/service/import.js

@@ -17,8 +17,6 @@ const { ObjectId } = mongoose.Types;
 const { createBatchStream } = require('../util/batch-stream');
 const CollectionProgressingStatus = require('../models/vo/collection-progressing-status');
 
-// const ErrorV3 = require('../models/vo/error-apiv3');
-
 
 const BULK_IMPORT_SIZE = 100;