I still have dual boot capability should I want it in the future, but for now Android is gone and I have a fully functioning 57Gb Windows 10 (fully upgraded to the latest November update). No reflashing, no reinstalling Windows, nothing lost, easy!
Sounds like not true. DualBoot screen and option is enclosed in BIOS. You’ve left some system partition for android, but deleted all other spaces that succesfull Android boot is dependent of. You would have to retore all of them in order to run Android again. Therefore, you’ll still have to find the way around on how to boot into this OS. And this would be harder than just trying to run something from Androidia space.