Update chainparams.cpp
Update chainparams.cpp

Removed unused cryptap.us seed.
unobtanium-official/Unobtanium,unobtanium-official/Unobtanium,unobtanium-official/Unobtanium,unobtanium-official/Unobtanium,unobtanium-official/Unobtanium,unobtanium-official/Unobtanium