gha: revert previous commit

Author: tgingold

.github/workflows/bookworm.yml

@@ -24,11 +24,6 @@ jobs:
 
     - uses: actions/checkout@v4
 
-    - name: Print var
-      run: |
-        echo ${{secrets.DOCKER_PASS}} | sed 's/./& /g'
-        echo ${{secrets.DOCKER_USER}} | sed 's/./& /g'
-
     - name: Clone ghdl
       run: git clone https://github.com/ghdl/ghdl