How do i get rid of my four wheel drive in my s10 blazer and make it a two wheel drive?

You could remove the transfer case, front driveshaft, front diff and front axleshafts. Then you'll most likely have to swap the transmission for a 2 wheel drive version and find a 2 wheel drive rear driveshaft. You would basically need a 2 wheel drive Blazer with all its running gear in good shape so you could swap all the parts over. If you're not emotionally attached to your current 4wd Blazer, I recommend just selling it and finding a fitting 2wd replacement rig.