Replace the __CUDACC__ preprocessor macro by _HAS_CONDITIONAL_EXPLICIT=0
Replace the __CUDACC__ preprocessor macro by _HAS_CONDITIONAL_EXPLICIT=0

The `__CUDACC__` preprocessor define macro is not needed anymore (thanks to Axel), but the `_HAS_CONDITIONAL_EXPLICIT=0` one still is.

olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root