mips: remove mode CS_MODE_MIPSGP64
mips: remove mode CS_MODE_MIPSGP64

xia0pin9/capstone,xia0pin9/capstone,bSr43/capstone,bSr43/capstone,xia0pin9/capstone,fvrmatteo/capstone,xia0pin9/capstone,AmesianX/capstone,xia0pin9/capstone,AmesianX/capstone,bSr43/capstone,fvrmatteo/capstone,fvrmatteo/capstone,AmesianX/capstone,bSr43/capstone,AmesianX/capstone,bSr43/capstone,AmesianX/capstone,bSr43/capstone,AmesianX/capstone,fvrmatteo/capstone,xia0pin9/capstone,fvrmatteo/capstone,AmesianX/capstone,fvrmatteo/capstone,xia0pin9/capstone,bSr43/capstone,fvrmatteo/capstone