remove old greenlight video

app/views/main/index.html.erb

@@ -19,9 +19,6 @@
       <div class="col-md-12 col-sm-12 text-center">
         <h1 id="main-text" class="display-4 mb-4"> <%= t("landing.welcome").html_safe %></h1>
         <p class="lead offset-lg-2 col-lg-8 col-sm-12 "><%= t("landing.about", href: link_to(t("greenlight"), "https://bigbluebutton.org/2018/07/09/greenlight-2-0/", target: "_blank", rel: "noopener")).html_safe %></p>
-        <%= link_to "https://youtu.be/Hso8yLzkqj8", target: "_blank" do %>
-          <h4><%= t("landing.video") %> <i class="far fa-play-circle ml-1"></i></h4>
-        <% end %>
       </div>
 
     </div>