Avoid including Capybara::DSL to conflict with definition of page

spec/support/wait_for_requests.rb

@@ -3,8 +3,6 @@ require_relative './wait_for_requests'
 module WaitForRequests
   extend self
 
-  include Capybara::DSL
-
   # This is inspired by http://www.salsify.com/blog/engineering/tearing-capybara-ajax-tests
   def block_and_wait_for_requests_complete
     Gitlab::Testing::RequestBlockerMiddleware.block_requests!
@@ -42,13 +40,13 @@ module WaitForRequests
   end
 
   def finished_all_vue_resource_requests?
-    page.evaluate_script('window.activeVueResources || 0').zero?
+    Capybara.page.evaluate_script('window.activeVueResources || 0').zero?
   end
 
   def finished_all_ajax_requests?
-    return true if page.evaluate_script('typeof jQuery === "undefined"')
+    return true if Capybara.page.evaluate_script('typeof jQuery === "undefined"')
 
-    page.evaluate_script('jQuery.active').zero?
+    Capybara.page.evaluate_script('jQuery.active').zero?
   end
 
   def javascript_test?