Remove unused table family_subscriptions

Table was merged with `family_requests` within remp/crm#1681.

remp/crm#2094

src/migrations/20211104160436_remove_family_subscriptions_table.php

@@ -0,0 +1,27 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class RemoveFamilySubscriptionsTable extends AbstractMigration
+{
+    public function up()
+    {
+        $this->table('family_subscriptions')
+            ->drop()
+            ->update();
+    }
+
+    public function down()
+    {
+        $this->table('family_subscriptions')
+            ->addColumn('family_request_id', 'integer', ['null' => false])
+            ->addColumn('master_subscription_id', 'integer', ['null' => false])
+            ->addColumn('slave_subscription_id', 'integer', ['null' => false])
+            ->addColumn('type', 'string', ['null' => false])
+            ->addColumn('created_at', 'datetime', ['null' => false])
+            ->addForeignKey('family_request_id', 'family_requests')
+            ->addForeignKey('master_subscription_id', 'subscriptions')
+            ->addForeignKey('slave_subscription_id', 'subscriptions')
+            ->create();
+    }
+}