Remove WebSub subscriptions (#11303)

db/post_migrate/20190715031050_drop_subscriptions.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class DropSubscriptions < ActiveRecord::Migration[5.2]
+  def up
+    drop_table :subscriptions
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end

db/schema.rb

@@ -648,19 +648,6 @@ ActiveRecord::Schema.define(version: 2019_07_15_164535) do
     t.index ["tag_id", "status_id"], name: "index_statuses_tags_on_tag_id_and_status_id", unique: true
   end
 
-  create_table "subscriptions", force: :cascade do |t|
-    t.string "callback_url", default: "", null: false
-    t.string "secret"
-    t.datetime "expires_at"
-    t.boolean "confirmed", default: false, null: false
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
-    t.datetime "last_successful_delivery_at"
-    t.string "domain"
-    t.bigint "account_id", null: false
-    t.index ["account_id", "callback_url"], name: "index_subscriptions_on_account_id_and_callback_url", unique: true
-  end
-
   create_table "tags", force: :cascade do |t|
     t.string "name", default: "", null: false
     t.datetime "created_at", null: false
@@ -821,7 +808,6 @@ ActiveRecord::Schema.define(version: 2019_07_15_164535) do
   add_foreign_key "statuses", "statuses", column: "reblog_of_id", on_delete: :cascade
   add_foreign_key "statuses_tags", "statuses", on_delete: :cascade
   add_foreign_key "statuses_tags", "tags", name: "fk_3081861e21", on_delete: :cascade
-  add_foreign_key "subscriptions", "accounts", name: "fk_9847d1cbb5", on_delete: :cascade
   add_foreign_key "tombstones", "accounts", on_delete: :cascade
   add_foreign_key "user_invite_requests", "users", on_delete: :cascade
   add_foreign_key "users", "accounts", name: "fk_50500f500d", on_delete: :cascade