Turn off relocatable device code

[BrendanKKrueger]

When I have Spiner as a dependency and I build with Kokkos 3.7, my code crashes during Kokkos::initialize(). Discussing with @dholladay00, we found that modifying the Spiner package.py file to remove relocatable device code and then explicitly turning that off when building Kokkos with Spack, the error goes away.