Is there a way to hide the "delete all submissions" selection from my client?

My client accidentally deleted ALL their submissions. Is there a way that I can had or restrict their access to be able to edit, and delete individual forms, but not DELETE ALL their submissions? 

That's odd, an message will prompt where you actually have to enter your account password in order to delete all submissions:

You may change your account password, if you want to: 

Let us know if you need more help, we will be glad to assist you.