Remove unused doorkeeper layout

app/views/layouts/doorkeeper/admin.html.haml

-!!!
-%html
-  %head
-    %meta{:charset => "utf-8"}
-      %meta{:content => "IE=edge", "http-equiv" => "X-UA-Compatible"}
-        %meta{:content => "width=device-width, initial-scale=1.0", :name => "viewport"}
-          %title Doorkeeper
-          = stylesheet_link_tag "doorkeeper/admin/application"
-          = csrf_meta_tags
-  %body
-    .navbar.navbar-inverse.navbar-fixed-top{:role => "navigation"}
-      .container
-        .navbar-header
-          = link_to 'OAuth2 Provider', oauth_applications_path, class: 'navbar-brand'
-        %ul.nav.navbar-nav
-          = content_tag :li, class: "#{'active' if request.path == oauth_applications_path}" do
-            = link_to 'Applications', oauth_applications_path
-    .container
-      - if flash[:notice].present?
-        .alert.alert-info
-          = flash[:notice]
-      = yield
\ No newline at end of file

app/views/layouts/doorkeeper/application.html.haml

-!!!
-%html
-  %head
-    %title OAuth authorize required
-    %meta{:charset => "utf-8"}
-      %meta{:content => "IE=edge", "http-equiv" => "X-UA-Compatible"}
-        %meta{:content => "width=device-width, initial-scale=1.0", :name => "viewport"}
-          = stylesheet_link_tag "doorkeeper/application"
-          = csrf_meta_tags
-  %body
-    #container
-      - if flash[:notice].present?
-        .alert.alert-info
-          = flash[:notice]
-      = yield
\ No newline at end of file