how to cancel the Reviews tab in the GD Detail

Hi all, how to cancel the Reviews tab in the GD Detail in order to prevent user from leaving a review?
the name of my CPT, used for the test, is “streetdreams”

Following this path
wp admin -> geodirectory -> custom post type -> edit streetdreams -> advanced mode
Almost at the bottom there is a flag
Comments – also will see comment count balloon on edit screen.

I disabled this flag, but I still see in the GD detail Page the tab Comments (reviews)

please see below the Listings of the CPT streetdreams
http://curiocity.travel/streetdreams/florence/street-derams-intro/#reviews

how to cancel the Reviews tab in the GD Detail in order to prevent user from leaving a review?

Thank you in advance

Giacomo