Remove unused validate_config.yml, since it causes ansible warnings

roles/matrix-base/tasks/main.yml

@@ -2,11 +2,6 @@
   tags:
     - always
 
-- import_tasks: "{{ role_path }}/tasks/validate_config.yml"
-  when: "run_setup|bool"
-  tags:
-    - setup-all
-
 - import_tasks: "{{ role_path }}/tasks/clean_up_old_files.yml"
   when: run_setup|bool
   tags:

roles/matrix-base/tasks/validate_config.yml

@@ -1 +0,0 @@
----