I want to remove all existing SDK versions as well as Xcode 4.
Xcode 4 Guide says to do this:
sudo /Xcode4/Library/uninstall-devtools --mode=all
But I don't have Xcode4 at this location and the only place I see it is under /Developer/Applications
I've already run the uninstall-devtools that was previously found in /Developer/Applications
and then did a reinstall.
What else can I do to completely remove everything and start from scratch?
I use this command:
sudo /Developer/Library/uninstall-devtools --mode=all
Edit (1 year later):
If you've downloaded Xcode from the App Store, it's self-contained, as @mediaslave suggests. You can just drag it to the trash or use AppZapper (or a similar utility) to remove the developer tools.
If you're looking to update it, you can also do that straight through the App Store.