Rooting failed, superSU remains I tried to root my Galaxy Core 2 Duos using Kingo root, which installed SuperSU. Unfortunately rooting failed all of a sudden, but still SuperSU remains.   

How can I remove SuperSU from my device?
for Root your Device, i think after using KingoRoot, you need Install Latest version of SuperSuthen, Root access is Successfully work.

and, for Delete ;

Use Full Wipe, or Install new rom.