ci(spack): drop +chemistry from step name (variant removed)

Author: sbryngelson

.github/workflows/spack.yml

@@ -34,7 +34,7 @@ jobs:
                 key: spack-store-${{ runner.os }}-${{ hashFiles('spack-packages/repos/spack_repo/builtin/packages/mfc/package.py', 'spack-packages/repos/spack_repo/builtin/packages/cantera/package.py', 'spack-packages/repos/spack_repo/builtin/packages/py_pyrometheus/package.py') }}
                 restore-keys: spack-store-${{ runner.os }}-
 
-          - name: Install mfc (defaults to +mpi +chemistry +pre_process +simulation +post_process)
+          - name: Install mfc (defaults to +mpi +pre_process +simulation +post_process)
             run: spack install --reuse mfc
 
           - name: Smoke test