clean up deployment workflow

Author: jalvesz

.github/workflows/fpm-deployment.yml

@@ -10,7 +10,7 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            toolchain: {compiler: gcc, version: 13, flags: ['-cpp -O3']}
+            toolchain: {compiler: gcc, version: 13}
 
     steps:
       - name: Checkout code
@@ -37,10 +37,9 @@ jobs:
 
       - run: |
           python config/fypp_deployment.py --deploy_stdlib_fpm 1
-          fpm test --flag "${{ join(matrix.toolchain.flags, ' ') }}"
+          fpm test --profile release
 
     # Update and deploy the f90 files generated by github-ci to the `stdlib-fpm` branch.
-    # might no longer be needed
       - name: Deploy 🚀
         uses: JamesIves/github-pages-deploy-action@4.1.5
         if: github.event_name != 'pull_request'