I had used a signal-slot for one action item(menuBar). I had later removed it. But code does not change. That is, the deleted signal-slot is still present in the generated code.

In the below image, actionExit is a action in menubar. I had previously used a signal-slot, that makes the application close, when we click on that. I removed it from Qt Designer, but the generated code did not reflect the change. 

In the below image, csvMWindow.ui is the file, where I deleted the signal-slot.