remove clean tasks file

tasks/clean.yaml

@@ -1,7 +0,0 @@
----
-
-
-# - name: ensure old packages are absent
-#   apt:
-#     pkg:
-#     state: absent

tasks/main.yaml

@@ -18,8 +18,6 @@
 
 - import_tasks: network.yaml
 
-- import_tasks: clean.yaml
-
 - import_role:
     name: screensaver
 - import_tasks: backgrounds.yaml