Disabling 'Reviews' attached to Products

Hi All!
We are total newbies. We use WP with WPLMS theme from VT.
Does anyone have a code to turn off ‘reviews’? We added this code in WP Admin->Appearance->Customize->Custom css Code:
.course_reviews{ display:none; }
We added it (to the bottom of the codes in that part) But it didn’t seem to work – the reviews still appear – can someone have a look and see if we’ve done it correctly?

PS – We installed the ‘Disable Comments Plugin’ and selected Courses, Posts, Products, but this didn’t seem to work either when it comes to ‘Reviews’.

PPS-

We even added code to:
WPLMS/themefunctions.php

add_filter( ‘woocommerce_product_tabs’, ‘sb_woo_remove_reviews_tab’, 98);
function sb_woo_remove_reviews_tab($tabs) {

unset($tabs[‘reviews’]);

return $tabs;
}
We have tried every concievable way to get rid of ‘Reviews’. But they stay.

Anyone know the solution? Thanks
Brent Havill
Founder
Australia Online Courses

https://www.australiaonlinecourses.com