Remove obsolete sequelizerc configuration file

In hedgedoc 1.8.0 sequelizerc is no longer required to as the
config.json file is used to read out the database settings.

roles/hedgedoc/tasks/main.yml

@@ -32,8 +32,5 @@
 - name: install hedgedoc config file
   template: src=config.json.j2 dest=/etc/webapps/hedgedoc/config.json owner=root group=root mode=0644
 
-- name: install hedgedoc sequelizerc file
-  template: src=sequelizerc.j2 dest=/etc/webapps/hedgedoc/sequelizerc owner=root group=root mode=0644
-
 - name: start and enable hedgedoc
   service: name=hedgedoc.service enabled=yes state=started

roles/hedgedoc/templates/sequelizerc.j2

-var path = require('path');
-
-module.exports = {
-    'config':          path.resolve('config.json'),
-    'migrations-path': path.resolve('lib', 'migrations'),
-    'models-path':     path.resolve('lib', 'models'),
-    'url':             'postgres://hedgedoc:{{ vault_postgres_users.hedgedoc }}@localhost:5432/hedgedoc'
-}