First Create a qlikview file with the same name on the same path from where you delete. After creating file with same name then come to QMC and then come to document tab. Here you see that document first enable the reload if you apply load on earlier file and then delete the document cals if you applied on that. Some times document cals take one day to delete from there. Let me know if that worked.
Sir go to your published folder from where you delete the task. Let Suppose you delete abc.qvw file. So now you have to create a qvw file with the same name abc.qvw. After creatuing the file come to QMC so here you see the abc.qvw is enable witgh schedule so you first have to disable schedule by going to Document tab and then reload. and after disable that task you also have to delete the document cal if you assign earlier on that file.
Task is assigned on .qvw files. so what happen with you is that you assign reload task on .qvw file. so qlikview make image for that task and then you directly delete that .qvw file from the location on which you assign reload task. So you delete from source location but on qmc it's image always be there because u didn't disable the Task.
So Step 1:
Come to source location where you delete .qvw file and make .qvw file with exactly same name.
Step 2:
after creating come to qmc then you see that qvw file is exist in Documents tab and on that .qvw file reload task is assign so first you have to disable that task and press apply.
Step 3:
Make sure you didn't apply license on that if you apply license on that so delete the license from that file as well.
