Delete Debian GNU / Linux installer?

im
1

I wanted to download Kali Linux and accidentally downloaded the normal one instead of in a virtual machine, but canceled the installation process. And logically I don't want that anymore, but whenever I start the laptop I can choose between "Windows10" and the option "Debian GNU / Linux - Continue with installation process". How can I fix it? What do I have to do to make this go away?

pi

Simply restore the boot sector from the backup.

You have a backup, don't you?