Wichita state University
Maharishi University
...

..

There could be some more which do NOT require GRE for admission into their graduate programs... A few words of warning though: My info could be stale and might not apply at present. I suggest you to go through their websites and get the latest info.

And I agree with Prapta. If you ask me, someone who wants to avoid GRE/GMAT should seriously think about avoiding the graduate schooling altogether . With a name like yours (Sanjaya Shrestha), I would rather concentrate on something which can make my name shine further amongst others.

Good Luck!