In Cam tree under Cam part:
Right click Milling tools.
Click Default(or Part if you only want the change for current file)>Tool Pattern
Pick Hole (or Reamer) and you will be able to delete the unwanted operations.
Save the file right away so it sticks.
I think others have altered lesser used processes to be a drill only command and left the Hole command intact with center drill. But since the processes cannot be renamed it may lead to confusion.