Fix Group#edit form

Don't show LDAP sync tab als active on groups#edit page
Don't show old LDAP settings

app/views/groups/_settings_nav.html.haml

@@ -7,7 +7,7 @@
     = link_to projects_group_path(@group) do
       %i.icon-folder-close
       Projects
-  = nav_link(controller: [:groups, :ldap_group_links]) do
+  = nav_link(controller: :ldap_group_links) do
     = link_to group_ldap_group_links_path(@group) do
       %i.icon-exchange
       LDAP Sync

app/views/groups/edit.html.haml

@@ -44,7 +44,6 @@
           .form-actions
             = f.submit 'Save group', class: "btn btn-save"
 
-        = render 'ldap_group_links/form', group: @group
     .panel.panel-danger
       .panel-heading Remove group
       .panel-body