Revert "Directly depend on libgomp and llvm-openmp to force the use of llvm during build process."
Revert "Directly depend on libgomp and llvm-openmp to force the use of llvm during build process."

This reverts commit 72729da6b10bbf2de19d2b95f3d88e804dafad60.

johanneskoester/staged-recipes,chrisburr/staged-recipes,kwilcox/staged-recipes,jakirkham/staged-recipes,scopatz/staged-recipes,hadim/staged-recipes,ReimarBauer/staged-recipes,stuertz/staged-recipes,chrisburr/staged-recipes,patricksnape/staged-recipes,SylvainCorlay/staged-recipes,igortg/staged-recipes,jakirkham/staged-recipes,scopatz/staged-recipes,goanpeca/staged-recipes,patricksnape/staged-recipes,SylvainCorlay/staged-recipes,conda-forge/staged-recipes,kwilcox/staged-recipes,mariusvniekerk/staged-recipes,johanneskoester/staged-recipes,jochym/staged-recipes,ocefpaf/staged-recipes,mariusvniekerk/staged-recipes,goanpeca/staged-recipes,ReimarBauer/staged-recipes,hadim/staged-recipes,conda-forge/staged-recipes,jochym/staged-recipes,igortg/staged-recipes,ocefpaf/staged-recipes,stuertz/staged-recipes