Merge branch 'ee-add-ee-images-ce' into 'master'

Remove full_namespace_format_regex because it's not used

See merge request gitlab-org/gitlab-ee!5061

doc/user/reserved_names.md

@@ -60,8 +60,6 @@ Currently the following names are reserved as top level groups:
 - explore
 - favicon.ico
 - groups
-- header_logo_dark.png
-- header_logo_light.png
 - health_check
 - help
 - import

lib/gitlab/path_regex.rb

@@ -33,8 +33,6 @@ module Gitlab
       favicon.ico
       files
       groups
-      header_logo_dark.png
-      header_logo_light.png
       health_check
       help
       import
@@ -185,10 +183,6 @@ module Gitlab
       @full_project_git_path_regex ||= %r{\A\/?(?<namespace_path>#{full_namespace_route_regex})\/(?<project_path>#{project_route_regex})\.git\z}
     end
 
-    def full_namespace_format_regex
-      @namespace_format_regex ||= /A#{FULL_NAMESPACE_FORMAT_REGEX}\z/.freeze
-    end
-
     def namespace_format_regex
       @namespace_format_regex ||= /\A#{NAMESPACE_FORMAT_REGEX}\z/.freeze
     end