Remove packages tab from sidebar

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/layouts/nav/sidebar/_project.html.haml

@@ -262,19 +262,6 @@
                 %strong.fly-out-top-item-name
                   = _('Registry')
 
-      - if project_nav_tab? :packages
-        = nav_link(controller: %w[projects/packages]) do
-          = link_to project_packages_path(@project) do
-            .nav-icon-container
-              = sprite_icon('disk')
-            %span.nav-item-name
-              = _('Packages')
-          %ul.sidebar-sub-level-items.is-fly-out-only
-            = nav_link(controller: %w[projects/packages], html_options: { class: "fly-out-top-item" } ) do
-              = link_to project_packages_path(@project) do
-                %strong.fly-out-top-item-name
-                  = _('Packages')
-
       - if project_nav_tab? :wiki
         = nav_link(controller: :wikis) do
           = link_to get_project_wiki_path(@project), class: 'shortcuts-wiki' do