MB-100: undo addition of sleep into menelaus_web

That was only done for testing and somehow I failed to remove it
before amending previous change.

Change-Id: Ica192c41bc97c5d5848b0f38225f49b938b60f1d
Reviewed-on: http://review.couchbase.org/27384
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Artem Stemkovski <artem@couchbase.com>
Reviewed-by: Artem Stemkovski <artem@couchbase.com>