fix(ci): [Distributed CI] remove all of the concrete directory when c…

…leaning the instance as lock files can persist after a failed run and the instance is not regenerated each time.

.github/workflows/compiler_build_and_test_cpu_distributed.yml

@@ -42,7 +42,7 @@ jobs:
 
       - name: Instance cleanup
         run: |
-          sudo rm -rf /home/ubuntu/actions-runner/_work/concrete/concrete/*
+          sudo rm -rf /home/ubuntu/actions-runner/_work/concrete/concrete
           docker system prune -af
 
       - name: Fetch repository