delete unused role

roles/postgres/tasks/main.yml

@@ -1,22 +0,0 @@
-- name: install postgres
-  package:
-    name:
-      - postgresql
-      - python-psycopg2
-      # needed because we need to become the unprivileged postgres user.
-      - acl
-    state: latest
-
-- name: create gitea database
-  postgresql_db:
-    name: giteadb
-  become: yes
-  become_user: postgres
-
-- name: create gitea postgres user
-  postgresql_user:
-    db: giteadb
-    name: gitea
-    password: "{{ gitea_postgres_pw }}"
-  become: yes
-  become_user: postgres