remove irrelevant roles

playbooks/pre-flight.yml

@@ -22,10 +22,4 @@
       loop_control:
         loop_var: role
       tags: prep
-#    - include_role:
-#        name: install-labs
-#      tags: workstation
-#    - include_role:
-#        name: prep-workspace
-#      tags: workstation
 ...