Followup to 11750417:

  Disable federated_plugin test for embedded, like other federated tests
  Also removed redundant include/not_embedded.inc from federated.test

mysql-test/suite/federated/federated.test

@@ -4,8 +4,6 @@
 #
 
 
-# should work with embedded server after mysqltest is fixed
---source include/not_embedded.inc
 --source federated.inc
 
 connection default;

mysql-test/suite/federated/federated_plugin.test

+--source include/not_embedded.inc
 --source include/have_federated_plugin.inc
 
 # Uninstall will not uninstall if ps has been used