style: idempotence

tasks/compile_callas_binaries.yml

@@ -58,6 +58,7 @@
   ansible.builtin.file:
     name: "/usr/lib/cgi-bin/lib/libstdc++.so.6"
     state: absent
+  changed_when: false
 
 # We need to use the ansible.builtin.shell module here, because the
 # ansible.builtin.command module does not accept setting environment variables