Remove DMPonline specific code from doorkeeper initializer

Co-Authored-By: gjacob24 <97518971+gjacob24@users.noreply.github.com>

Author: gjacob24

config/initializers/doorkeeper.rb

@@ -58,14 +58,3 @@
   # enable ssl requirement for redirect url
   force_ssl_in_redirect_uri true
 end
-
-# add support for dmp_multi_tenancy if available
-Rails.application.config.to_prepare do
-  if defined?(Roadmap::Extension::TenantLookup)
-    [Doorkeeper::ApplicationsController,
-     Doorkeeper::AuthorizationsController,
-     Doorkeeper::AuthorizedApplicationsController].each do |controller|
-      controller.include Roadmap::Extension::TenantLookup
-    end
-  end
-end