chore: Remove OpenSearch for edxapp from devstack (#977)

Author: syedimranhassan

docker-compose.yml

@@ -438,7 +438,6 @@ services:
       - memcached
       - mongo
       - mysql57
-      - opensearch12
     # Allows attachment to the LMS service using 'docker attach <containerID>'.
     stdin_open: true
     tty: true
@@ -598,7 +597,6 @@ services:
       - memcached
       - mongo
       - mysql57
-      - opensearch12
     # Allows attachment to the Studio service using 'docker attach <containerID>'.
     stdin_open: true
     tty: true