remove @create_ownership_vouchers_table from services

Signed-off-by: Riccardo Nalgi <riccardo.nalgi@secomind.com>

Author: mizzet1

apps/astarte_data_updater_plant/test/support/database_test_helper.ex

@@ -53,15 +53,6 @@ defmodule Astarte.DataUpdaterPlant.DatabaseTestHelper do
     );
   """
 
-  @create_ownership_vouchers_table """
-  CREATE TABLE :keyspace.ownership_vouchers (
-      private_key blob,
-      voucher_data blob,
-      device_id uuid,
-     PRIMARY KEY (device_id, voucher_data)
-   );
-  """
-
   @create_devices_table """
       CREATE TABLE :keyspace.devices (
         device_id uuid,

apps/astarte_data_updater_plant/test/support/helpers/database.ex

@@ -75,15 +75,6 @@ defmodule Astarte.Helpers.Database do
   );
   """
 
-  @create_ownership_vouchers_table """
-  CREATE TABLE :keyspace.ownership_vouchers (
-      private_key blob,
-      voucher_data blob,
-      device_id uuid,
-     PRIMARY KEY (device_id, voucher_data)
-   );
-  """
-
   @create_devices_table """
   CREATE TABLE :keyspace.devices (
     device_id uuid,

apps/astarte_housekeeping/test/support/helpers/database.ex

@@ -68,15 +68,6 @@ defmodule Astarte.Housekeeping.Helpers.Database do
   );
   """
 
-  @create_ownership_vouchers_table """
-  CREATE TABLE :keyspace.ownership_vouchers (
-      private_key blob,
-      voucher_data blob,
-      guid blob,
-      PRIMARY KEY (guid)
-   );
-  """
-
   @create_devices_table """
   CREATE TABLE :keyspace.devices (
     device_id uuid,

apps/astarte_trigger_engine/test/support/helpers/database.ex

@@ -70,15 +70,6 @@ defmodule Astarte.Helpers.Database do
   );
   """
 
-  @create_ownership_vouchers_table """
-  CREATE TABLE :keyspace.ownership_vouchers (
-      private_key blob,
-      voucher_data blob,
-      device_id uuid,
-      PRIMARY KEY (device_id, voucher_data)
-   );
-  """
-
   @create_devices_table """
   CREATE TABLE :keyspace.devices (
     device_id uuid,

libs/astarte_data_access/test/support/database_test_helper.exs

@@ -57,15 +57,6 @@ defmodule Astarte.DataAccess.DatabaseTestHelper do
     );
   """
 
-  @create_ownership_vouchers_table """
-  CREATE TABLE :keyspace.ownership_vouchers (
-      private_key blob,
-      voucher_data blob,
-      device_id uuid,
-      PRIMARY KEY (device_id, voucher_data)
-   );
-  """
-
   @create_devices_table """
       CREATE TABLE autotestrealm.devices (
         device_id uuid,