Unused variables

[CrackerHax]

perlin.cpp:119:24: warning: unused variable ‘nx’ [-Wunused-variable] thread_local float nx,ny,nz; ^ perlin.cpp:119:27: warning: unused variable ‘ny’ [-Wunused-variable] thread_local float nx,ny,nz; ^ perlin.cpp:119:30: warning: unused variable ‘nz’ [-Wunused-variable] thread_local float nx,ny,nz; ^ perlin.cpp:121:24: warning: unused variable ‘tmp’ [-Wunused-variable] thread_local float tmp; ^ perlin.cpp: In member function ‘float Perlin::_4D(std::initializer_list, float) const’: perlin.cpp:202:24: warning: unused variable ‘tmp’ [-Wunused-variable] thread_local float tmp;