Remove spec for merge button hidden, as it shouldn't be.

features/project/merge_requests.feature

@@ -334,14 +334,12 @@ Feature: Project Merge Requests
     And I visit project "Shop" merge requests page
     And merge request 'Bug NS-04' must be approved
     And I click link "Bug NS-04"
-    And I should see the merge button disabled
     When I click link "Approve"
     Then I should see approved merge request "Bug NS-04"
 
   Scenario: I can not approve merge request if I am not an approver
     Given merge request 'Bug NS-04' must be approved by some user
     And I click link "Bug NS-04"
-    And I should see the merge button disabled
     When I should not see Approve button
     And I should see message that MR require an approval