No it definitely is on the market.
[APP] Superuser 2.3.6.1 - Now on the Market [2010-09-05] - xda-developers
that's the guy who made it apparently? (idk)
anyways, i was going to put this piece of code into my terminal emulator on my phone :
$ su
# (remount for your phone, Nexus One is 'mount -o remount,rw /dev/block/mtdblock3 /system', other phones will use the same pattern, but may vary on the '/dev...' bit)
# rm /system/app/Superuser.apk
# pm uninstall com.noshufou.android.su
# (same remount command as above, but with 'remount,ro' instead of 'remount,rw')
The problem is im confused where he talks about how he knows the Nexus One mount, and that other phones patterns may vary.
He then proceeds to say this in the following paragraph :
"I make no guarantee that this will work on your particular setup, but I will try to help get it working. There's also the community that can help. Post your questions with logs here in the thread and we'll try to get you an answer. If your phone bursts into a ball of flame, I can't help at all. "
I personally don't want my phone to burst into a ball of flame, so i decided not to do it, unless someone can tell me the proper directory for a droid 2