Revert "Beta mode cookie must be set on mobile domain"

This reverts commit 1903d1adae.
This didn't actually solve the problem.

Change-Id: Ic789e96dcc17268abe3690647e1d82a764491646

tests/selenium/features/step_definitions/common_steps.js

@@ -6,11 +6,6 @@ const iAmUsingTheMobileSite = () => {
 };
 
 const iAmInBetaMode = () => {
-	// running beta mode requires being on the mobile domain
-	iAmUsingTheMobileSite();
-	// and making sure the browser URL is set to the mobile domain by triggering a page load
-	ArticlePage.open( 'Page on the mobile domain' );
-	// Cookie will now set on mobile domain
 	ArticlePage.setBetaMode();
 };
 

tests/selenium/specs/category.js

@@ -6,6 +6,7 @@ const { iClickOnTheCategoryButton,
 		iAmInAWikiThatHasCategories
 	} = require( '../features/step_definitions/create_page_api_steps' ),
 	{
+		iAmUsingTheMobileSite,
 		iAmOnPage, iAmInBetaMode
 	} = require( '../features/step_definitions/common_steps' );
 
@@ -18,6 +19,8 @@ describe( 'Categories', function () {
 		iAmInAWikiThatHasCategories( title );
 
 		// And I am using the mobile site
+		iAmUsingTheMobileSite();
+
 		// And I am in beta mode
 		iAmInBetaMode();