Need help with removing windows boot manager

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I had exactly the same problem and this guy found solution and helped me to remove windows boot manager, easy to follow.

How to remove windows form the UEFI

I have an update, I found the solution https://askubuntu.com/questions/1042031/how-do-i-remove-windows-from-the-uefi-boot-menu-after-custom-installing-ubuntu I might of missed to add some sense when I created this topic… but I searched for an answer and fixed it! it worked! thanks for people who try to help