[MM-61086] Fix errcheck linter issue in batch_worker_test.go (#30644)

server/.golangci.yml

@@ -102,7 +102,6 @@ issues:
         channels/app/slashcommands/helper_test.go|\
         channels/app/team_test.go|\
         channels/app/upload.go|\
-        channels/jobs/batch_worker_test.go|\
         channels/store/localcachelayer/channel_layer.go|\
         channels/store/localcachelayer/channel_layer_test.go|\
         channels/store/localcachelayer/emoji_layer.go|\