Remove Gitlab::Geo::GeoTasks#refresh_foreign_tables! method

ee/lib/gitlab/geo/geo_tasks.rb

@@ -35,24 +35,6 @@ module Gitlab
         end
       end
 
-      def refresh_foreign_tables!
-        sql = <<~SQL
-            DROP SCHEMA IF EXISTS gitlab_secondary CASCADE;
-            CREATE SCHEMA gitlab_secondary;
-            IMPORT FOREIGN SCHEMA public
-              FROM SERVER gitlab_secondary
-              INTO gitlab_secondary;
-        SQL
-
-        Gitlab::Geo::DatabaseTasks.with_geo_db do
-          ActiveRecord::Base.transaction do
-            ActiveRecord::Base.connection.execute(sql)
-          end
-        end
-
-        Gitlab::Geo::Fdw.expire_cache!
-      end
-
       def foreign_server_configured?
         sql = <<~SQL
           SELECT count(1)