Remove unused feature steps.

features/project/edit_issuetracker.feature

-Feature: Project Issue Tracker
-  Background:
-    Given I sign in as a user
-    And I own project "Shop"
-    And project "Shop" has issues enabled
-    And I visit project "Shop" page
-
-  Scenario: I set the issue tracker to "GitLab"
-    When I visit edit project "Shop" page
-    And change the issue tracker to "GitLab"
-    And I save project
-    Then I the project should have "GitLab" as issue tracker
-
-  Scenario: I set the issue tracker to "Redmine"
-    When I visit edit project "Shop" page
-    And change the issue tracker to "Redmine"
-    And I save project
-    Then I the project should have "Redmine" as issue tracker

features/steps/project/issue_tracker.rb

-class Spinach::Features::ProjectIssueTracker < Spinach::FeatureSteps
-  include SharedAuthentication
-  include SharedProject
-  include SharedPaths
-
-  step 'project "Shop" has issues enabled' do
-    @project = Project.find_by(name: "Shop")
-    @project ||= create(:project, name: "Shop", namespace: @user.namespace)
-    @project.issues_enabled = true
-  end
-
-  step 'change the issue tracker to "GitLab"' do
-    select 'GitLab', from: 'project_issues_tracker'
-  end
-
-  step 'I the project should have "GitLab" as issue tracker' do
-    find_field('project_issues_tracker').value.should == 'gitlab'
-  end
-
-  step 'change the issue tracker to "Redmine"' do
-    select 'Redmine', from: 'project_issues_tracker'
-  end
-
-  step 'I the project should have "Redmine" as issue tracker' do
-    find_field('project_issues_tracker').value.should == 'redmine'
-  end
-
-  step 'I save project' do
-    click_button 'Save changes'
-  end
-end

spec/lib/gitlab/reference_extractor_spec.rb

@@ -12,7 +12,6 @@ describe Gitlab::ReferenceExtractor do
   end
 
   it 'extracts JIRA issue references' do
-    Gitlab.config.gitlab.stub(:issues_tracker).and_return('jira')
     subject.analyze('this one talks about issue JIRA-1234', nil)
     subject.issues.should == [{ project: nil, id: 'JIRA-1234' }]
   end