Remove mention of sqlite3 support for Etherpad

The official Etherpad Docker image has no support for sqlite3 databases.

group_vars/matrix_servers

@@ -774,8 +774,6 @@ matrix_etherpad_systemd_required_services_list: |
     (['matrix-postgres.service'] if matrix_postgres_enabled else [])
   }}
 
-# Postgres is the default, except if not using `matrix_postgres` (internal postgres)
-matrix_etherpad_database_engine: "{{ 'postgres' if matrix_postgres_enabled else 'sqlite' }}"
 matrix_etherpad_database_password: "{{ matrix_synapse_macaroon_secret_key | password_hash('sha512', 'etherpad.db') | to_uuid }}"
 
 ######################################################################

roles/matrix-etherpad/defaults/main.yml

@@ -36,15 +36,8 @@ matrix_etherpad_base_url: "https://{{ matrix_server_fqn_dimension }}{{ matrix_et
 
 # Database-related configuration fields.
 #
-# Etherpad recommends using a dedicated database, and supports Sqlite only for development
+# Etherpad requires a dedicated database
-#
+matrix_etherpad_database_engine: 'postgres'
-# To use Postgres:
-# - change the engine (`matrix_etherpad_database_engine: 'postgres'`)
-# - adjust your database credentials via the `matrix_etherpad_postgres_*` variables
-matrix_etherpad_database_engine: 'sqlite'
-
-matrix_etherpad_sqlite_database_path_local: "{{ matrix_etherpad_base_path }}/etherpad.db"
-matrix_etherpad_sqlite_database_path_in_container: "/data/etherpad.db"
 
 matrix_etherpad_database_username: 'matrix_etherpad'
 matrix_etherpad_database_password: 'some-password'

roles/matrix-etherpad/templates/settings.json.j2

@@ -8,15 +8,11 @@
   "showSettingsInAdminPage": true,
   "dbType": {{ matrix_etherpad_database_engine|to_json }},
   "dbSettings": {
-    {% if matrix_etherpad_database_engine == 'sqlite' %}
-      "filename": {{ matrix_etherpad_sqlite_database_path_in_container|to_json }}
-    {% elif matrix_etherpad_database_engine == 'postgres' %}
     "database": {{ matrix_etherpad_database_name|to_json }},
     "host":     {{ matrix_etherpad_database_hostname|to_json }},
     "password": {{ matrix_etherpad_database_password|to_json }},
     "port":     {{ matrix_etherpad_database_port|to_json }},
     "user":     {{ matrix_etherpad_database_username|to_json }}
-    {% endif %}
   },
   "defaultPadText" : {{ matrix_etherpad_default_pad_text|to_json }},
   "suppressErrorsInPadText": false,

roles/matrix-etherpad/templates/systemd/matrix-etherpad.service.j2

@@ -16,11 +16,6 @@ Environment="HOME={{ matrix_systemd_unit_home_path }}"
 ExecStartPre=-{{ matrix_host_command_docker }} kill matrix-etherpad
 ExecStartPre=-{{ matrix_host_command_docker }} rm matrix-etherpad
 
-# Fixup database ownership if it got changed somehow (during a server migration, etc.)
-{% if matrix_etherpad_database_engine == 'sqlite' %}
-ExecStartPre=-{{ matrix_host_command_chown }} {{ matrix_etherpad_user_uid }} {{ matrix_etherpad_sqlite_database_path_local }}
-{% endif %}
-
 ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-etherpad \
 			--log-driver=none \
 			--user={{ matrix_etherpad_user_uid }}:{{ matrix_etherpad_user_gid }} \