Disable project templates for now

There are only three templates and they are framework-specific. The are
removed to lower complexity of the project creation page.

app/views/projects/new.html.haml

@@ -35,10 +35,6 @@
           %a.nav-link.active{ href: '#blank-project-pane', id: 'blank-project-tab', data: { toggle: 'tab', track_label: 'blank_project', track_event: "click_tab", track_value: "" }, role: 'tab' }
             %span.d-none.d-sm-block= s_('ProjectsNew|Blank project')
             %span.d-block.d-sm-none= s_('ProjectsNew|Blank')
-        %li.nav-item{ role: 'presentation' }
-          %a.nav-link{ href: '#create-from-template-pane', id: 'create-from-template-tab', data: { toggle: 'tab', track_label: 'create_from_template', track_event: "click_tab", track_value: "" }, role: 'tab' }
-            %span.d-none.d-sm-block.qa-project-create-from-template-tab= s_('ProjectsNew|Create from template')
-            %span.d-block.d-sm-none= s_('ProjectsNew|Template')
         %li.nav-item{ role: 'presentation' }
           %a.nav-link{ href: '#import-project-pane', id: 'import-project-tab', data: { toggle: 'tab', track_label: 'import_project', track_event: "click_tab", track_value: "" }, role: 'tab' }
             %span.d-none.d-sm-block= s_('ProjectsNew|Import project')
@@ -50,18 +46,6 @@
           = form_for @project, html: { class: 'new_project' } do |f|
             = render 'new_project_fields', f: f, project_name_id: "blank-project-name"
 
-        #create-from-template-pane.tab-pane.js-toggle-container.px-0.pb-0{ class: active_when(active_tab == 'template'), role: 'tabpanel' }
-          .card.card-slim.m-4.p-4
-            %div
-              - contributing_templates_url = 'https://gitlab.com/gitlab-org/project-templates/contributing'
-              - link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: contributing_templates_url }
-              = _('Learn how to %{link_start}contribute to the built-in templates%{link_end}').html_safe % { link_start: link_start, link_end: '</a>'.html_safe }
-          = form_for @project, html: { class: 'new_project' } do |f|
-            .project-template
-              .form-group
-                %div
-                  = render 'project_templates', f: f, project: @project
-
         .tab-pane.import-project-pane.js-toggle-container{ id: 'import-project-pane', class: active_when(active_tab == 'import'), role: 'tabpanel' }
           - if import_sources_enabled?
             = render 'import_project_pane', active_tab: active_tab