Remove duplicate settings for default_url_options

Closes internal https://dev.gitlab.org/gitlab/gitlabhq/issues/2269

app/controllers/application_controller.rb

@@ -182,18 +182,6 @@ class ApplicationController < ActionController::Base
     response.headers["Expires"] = "Fri, 01 Jan 1990 00:00:00 GMT"
   end
 
-  def default_url_options
-    if !Rails.env.test?
-      port = Gitlab.config.gitlab.port unless Gitlab.config.gitlab_on_standard_port?
-      { host: Gitlab.config.gitlab.host,
-        protocol: Gitlab.config.gitlab.protocol,
-        port: port,
-        script_name: Gitlab.config.gitlab.relative_url_root }
-    else
-      super
-    end
-  end
-
   def default_headers
     headers['X-Frame-Options'] = 'DENY'
     headers['X-XSS-Protection'] = '1; mode=block'

app/mailers/notify.rb

@@ -16,11 +16,6 @@ class Notify < ActionMailer::Base
   attr_accessor :current_user
   helper_method :current_user, :can?
 
-  default_url_options[:host]     = Gitlab.config.gitlab.host
-  default_url_options[:protocol] = Gitlab.config.gitlab.protocol
-  default_url_options[:port]     = Gitlab.config.gitlab.port unless Gitlab.config.gitlab_on_standard_port?
-  default_url_options[:script_name] = Gitlab.config.gitlab.relative_url_root
-
   default from: Proc.new { default_sender_address.format }
   default reply_to: Gitlab.config.gitlab.email_reply_to
 
@@ -69,7 +64,7 @@ class Notify < ActionMailer::Base
   # Only the displayed name changes; the actual email address is always the same.
   def sender(sender_id, send_from_user_email = false)
     return unless sender = User.find(sender_id)
-    
+
     address = default_sender_address
     address.display_name = sender.name
 

app/models/project_services/gitlab_issue_tracker_service.rb

@@ -21,11 +21,6 @@
 class GitlabIssueTrackerService < IssueTrackerService
   include Rails.application.routes.url_helpers
 
-  default_url_options[:host]     = Gitlab.config.gitlab.host
-  default_url_options[:protocol] = Gitlab.config.gitlab.protocol
-  default_url_options[:port]     = Gitlab.config.gitlab.port unless Gitlab.config.gitlab_on_standard_port?
-  default_url_options[:script_name] = Gitlab.config.gitlab.relative_url_root
-
   prop_accessor :title, :description, :project_url, :issues_url, :new_issue_url
 
   def default?