remove supautils custom script for pgmq

This is just to prove the test failure. Essentially the `drop_queue` is
not patched to remove the partitioned argument:

- pgmq                   | pgmq                     | drop_queue                                       | queue_name text                                                                   >
+ pgmq                   | pgmq                     | drop_queue                                       | queue_name text, partitioned boolean                                              >

Author: steve-chavez