quick keys for adobe pro - deleting

I'm relatively new to Adobe Pro, which we use to create financial reports from other files. At one point, you could use, I think, Ctrl + Shift + D to delete out pages. I either turned off this function or it is no longer available? Can I create a quick key to delete? How can I delete with one hand and scroll with the other to improve efficiency? I'm deleting out almost a hundred pages and anything would help. Thanks.