Remove redundant sentence from cohorts disabled

app/views/admin/cohorts/index.html.haml

@@ -10,7 +10,7 @@
       %p
         User cohorts are only shown when the
         = link_to 'usage ping', help_page_path('administration/usage_ping_and_cohorts', anchor: 'usage-ping'), target: '_blank'
-        is enabled. It is currently disabled. To enable it and see user cohorts,
+        is enabled. To enable it and see user cohorts,
         visit
         = succeed '.' do
           = link_to 'application settings', admin_application_settings_path(anchor: 'usage-statistics')