Remove spec since it already exists in MR page

spec/features/issues/filter_by_milestone_spec.rb

-require 'rails_helper'
-
-feature 'Issue filtering by Milestone', feature: true do
-  let(:project)   { create(:project, :public) }
-  let(:milestone) { create(:milestone, project: project) }
-
-  scenario 'filters by no Milestone', js: true do
-    create(:issue, project: project)
-    create(:issue, project: project, milestone: milestone)
-
-    visit_issues(project)
-    filter_by_milestone(Milestone::None.title)
-
-    expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: 'No Milestone')
-    expect(page).to have_css('.issue', count: 1)
-  end
-
-  context 'filters by upcoming milestone', js: true do
-    it 'does not show issues with no expiry' do
-      create(:issue, project: project)
-      create(:issue, project: project, milestone: milestone)
-
-      visit_issues(project)
-      filter_by_milestone(Milestone::Upcoming.title)
-
-      expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: 'Upcoming')
-      expect(page).to have_css('.issue', count: 0)
-    end
-
-    it 'shows issues in future' do
-      milestone = create(:milestone, project: project, due_date: Date.tomorrow)
-      create(:issue, project: project)
-      create(:issue, project: project, milestone: milestone)
-
-      visit_issues(project)
-      filter_by_milestone(Milestone::Upcoming.title)
-
-      expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: 'Upcoming')
-      expect(page).to have_css('.issue', count: 1)
-    end
-
-    it 'does not show issues in past' do
-      milestone = create(:milestone, project: project, due_date: Date.yesterday)
-      create(:issue, project: project)
-      create(:issue, project: project, milestone: milestone)
-
-      visit_issues(project)
-      filter_by_milestone(Milestone::Upcoming.title)
-
-      expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: 'Upcoming')
-      expect(page).to have_css('.issue', count: 0)
-    end
-  end
-
-  scenario 'filters by a specific Milestone', js: true do
-    create(:issue, project: project, milestone: milestone)
-    create(:issue, project: project)
-
-    visit_issues(project)
-    filter_by_milestone(milestone.title)
-
-    expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: milestone.title)
-    expect(page).to have_css('.issue', count: 1)
-  end
-
-  context 'when milestone has single quotes in title' do
-    background do
-      milestone.update(name: "rock 'n' roll")
-    end
-
-    scenario 'filters by a specific Milestone', js: true do
-      create(:issue, project: project, milestone: milestone)
-      create(:issue, project: project)
-
-      visit_issues(project)
-      filter_by_milestone(milestone.title)
-
-      expect(page).to have_css('.milestone-filter .dropdown-toggle-text', text: milestone.title)
-      expect(page).to have_css('.issue', count: 1)
-    end
-  end
-
-  def visit_issues(project)
-    visit namespace_project_issues_path(project.namespace, project)
-  end
-
-  def filter_by_milestone(title)
-    find(".js-milestone-select").click
-    find(".milestone-filter .dropdown-content a", text: title).click
-  end
-end