Revert "mark cukes to be executed with selenium"

This reverts commit c8cb4ed509.

features/users/user_registration.feature

@@ -34,7 +34,7 @@ And I open the "Sign in" menu
 And I follow "t:label_register" within "#top-menu-items" [i18n]
 Then I should be on the registration page
 
-@javascript @selenium
+@javascript
 Scenario: A user can register successfully after filling in the registration form
 Given I am on the registration page
 And I fill in "user_login" with "heidi"
@@ -46,7 +46,7 @@ And I fill in "user_mail" with "heidi@test.com"
 And I click on "Submit"
 Then I should see "Your account was created and is now pending administrator approval."
 
-@javascript @selenium
+@javascript
 Scenario: A user is unable to register if one of the constraints left blank
 Given I am on the registration page
 And I fill in "user_login" with "heidi"
@@ -57,7 +57,7 @@ And I fill in "user_lastname" with "Swiss"
 And I click on "Submit"
 Then the element "#user_mail" should be invalid
 
-@javascript @selenium
+@javascript
 Scenario: A user is unable to register if the password does not match the confirmation
 Given I am on the registration page
 And I fill in "user_login" with "heidi"