Courses Link

Solved, it wasn't cache, there is 2 instances of Courses

I went to themes/default/templates and opened _sidebar.tpl and comment out many things that where default, but when I comment out the Courses Link, it doesn't disappear

{*
      {if $system['courses_enabled']}
        <li {if $page == "courses"}class="active" {/if}>
          <a href="{$system['system_url']}/courses">
            {include file='__svg_icons.tpl' icon="courses" class="main-icon mr10" width="24px" height="24px"}{__("Courses")}
          </a>
        </li>
      {/if}
*}

Why?

I went to themes/default/templates and opened _sidebar.tpl and comment out many things that where default, but when I comment out the Courses Link, it doesn't disappear

{*
      {if $system['courses_enabled']}
        <li {if $page == "courses"}class="active" {/if}>
          <a href="{$system['system_url']}/courses">
            {include file='__svg_icons.tpl' icon="courses" class="main-icon mr10" width="24px" height="24px"}{__("Courses")}
          </a>
        </li>
      {/if}
*}

Why?