How do I completely remove openSUSE secure boot?

I was using a dual boot of openSUSE and Windows and I decided to delete OpenSUSE by deleting the partition. On rebooting, I found out that the secure boot for openSUSE was still there, leading to an error. to make things worse, the Windows boot loader was no longer there and I have to access it through the UEFI settings. How do I change this to automatically boot windows again?