Revert #5772 (#6221)

app/controllers/activitypub/follows_controller.rb

@@ -1,22 +0,0 @@
-# frozen_string_literal: true
-
-class ActivityPub::FollowsController < Api::BaseController
-  include SignatureVerification
-
-  def show
-    render json: follow_request,
-           serializer: ActivityPub::FollowSerializer,
-           adapter: ActivityPub::Adapter,
-           content_type: 'application/activity+json'
-  end
-
-  private
-
-  def follow_request
-    FollowRequest.includes(:account).references(:account).find_by!(
-      id: params.require(:id),
-      accounts: { domain: nil, username: params.require(:account_username) },
-      target_account: signed_request_account
-    )
-  end
-end