removed the -lgomp flag for linking when using Grackle
removed the -lgomp flag for linking when using Grackle

evaneschneider/cholla,cholla-hydro/cholla,cholla-hydro/cholla,cholla-hydro/cholla,evaneschneider/cholla,evaneschneider/cholla,evaneschneider/cholla,cholla-hydro/cholla