chore: simplify broken script

Author: npalm

examples/multi-runner/templates/runner-configs/linux-arm64.yaml

@@ -20,10 +20,5 @@ runner_config:
   scale_down_schedule_expression: cron(* * * * ? *)
   runner_hook_job_started: |
     echo "Running pre job hook as \$(whoami)"
-
-    # Clean github workspace from previous runs
-    if [[ -n "\$GITHUB_WORKSPACE" ]]; do
-      rm -rf "\$GITHUB_WORKSPACE"
-    done
   runner_hook_job_completed: |
     echo "Running post job hook as \$(whoami)"