Update spack-ubuntu.yml

Author: lelandaisb

.github/workflows/spack-ubuntu.yml

@@ -29,7 +29,6 @@ jobs:
       - name: Initialize the dev environment
         shell: bash
         run : |
-          cd /usr/bin && ln -s gfortran-9 gfortran
           source /spack/share/spack/setup-env.sh
           git clone --depth=1 https://github.com/LIHPC-Computational-Geometry/spack_recipes_meshing.git
           spack repo add ./spack_recipes_meshing/meshing_repo