Remove fallback to hostip.info

We haven't used hostip.info in production for years, except
for when we did so by accident, leading to a two hour partial
outage when it went down.

test/controllers/api/users_controller_test.rb

@@ -2,12 +2,6 @@ require "test_helper"
 
 module Api
   class UsersControllerTest < ActionController::TestCase
-    def setup
-      super
-
-      stub_hostip_requests
-    end
-
     ##
     # test all routes which lead to this controller
     def test_routes

test/controllers/site_controller_test.rb

@@ -8,8 +8,6 @@ class SiteControllerTest < ActionController::TestCase
 
     Settings.id_key = create(:client_application).key
     Settings.potlatch2_key = create(:client_application).key
-
-    stub_hostip_requests
   end
 
   ##

test/controllers/users_controller_test.rb

@@ -1,12 +1,6 @@
 require "test_helper"
 
 class UsersControllerTest < ActionController::TestCase
-  def setup
-    super
-
-    stub_hostip_requests
-  end
-
   ##
   # test all routes which lead to this controller
   def test_routes