Remove Number of Reviews

I'm attempting to remove the number of reviews from course listings such as these http://nilc.co.uk/courses/   I've been looking at doing this in CSS and had attempted the following in our Child Theme - this code comes from an earlier solution in the forums div#item-meta { display: none; } .footertop .footerwidget { text-align: center; } #headertop a{font-size:14px !important;} .more_course .review_course:first-child,.course_finish .review_title,.course_finish .review_title+#message{ display: none; } .product.woocommerce.add_to_cart_inline{border:none !important;} .more_course .review_course{margin-top:20px !important;} .item-list-tabs #activity-personal-li,.item-list-tabs #xprofile-personal-li, .item-list-tabs #settings-personal-li{ display:none; } .certificate_content:before{ content:' '; display:none; } .block.courseitem span.clear+strong{display:none;} .block.courseitem .instructor_course + strong,.widget_course_list li h6 span{ display:none !important; } #footerlogo { display: none; } .course_reviews, #course-list .item-meta .students{display:none;} .field-visibility-settings, .field-visibility-settings-notoggle, .field-visibility-settings-toggle{display: none !important;} .course_reviews{ display:none; } .breadcrumbs{display:none;} .course_reviews .review_title, #course-list .item-meta .students{display:none;} #buddypress div#item-header div#item-meta .students { display: none; } .students_undertaking{ display:none; } .course_description{ padding-top:20px; border-top:1px solid #efefef; } .star-rating { display:none; } .bp-user .mfp-auto-cursor .mfp-content{max-width:800px !important;} .course_timeline li.done > span:before{position: absolute; left: 6px;margin:0; top: 3px;} .block_media { position: relative; max-height: 150px; overflow: hidden; } .block.courseitem .block_content { height: 120px; } .course_reviews{display:none;} .block.courseitem.course2 .block_content .star-rating{ display:none; }   Unfortunately I'm not getting any luck with this. Can you point me to how the review number is generated. I'm hoping that perhaps a filter in PHP might do this?