Resolve duplicate api call

This solves the duplicate API calls from members.js
by removing the additional events being emitted when
a group member's experination date is changed or
removed. The change event doesn't need to get fired
here because it's already being fired by pikaday
in both cases.

app/assets/javascripts/member_expiration_date.js

@@ -29,8 +29,6 @@ export default function memberExpirationDate(selector = '.js-access-expiration-d
       onSelect(dateText) {
         $input.val(calendar.toString(dateText));
 
-        $input.trigger('change');
-
         toggleClearInput.call($input);
       },
       firstDay: gon.first_day_of_week,
@@ -49,7 +47,6 @@ export default function memberExpirationDate(selector = '.js-access-expiration-d
     const calendar = input.data('pikaday');
 
     calendar.setDate(null);
-    input.trigger('change');
     toggleClearInput.call(input);
   });
 

spec/features/groups/members/master_adds_member_with_expiration_date_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'Groups > Members > Owner adds member with expiration date', :js do
+  include Select2Helper
+  include ActiveSupport::Testing::TimeHelpers
+
+  let(:user1) { create(:user, name: 'John Doe') }
+  let!(:new_member) { create(:user, name: 'Mary Jane') }
+  let(:group) { create(:group) }
+
+  before do
+    group.add_owner(user1)
+    sign_in(user1)
+  end
+
+  it 'expiration date is displayed in the members list' do
+    travel_to Time.zone.parse('2016-08-06 08:00') do
+      date = 4.days.from_now
+      visit group_group_members_path(group)
+
+      page.within '.invite-users-form' do
+        select2(new_member.id, from: '#user_ids', multiple: true)
+        fill_in 'expires_at', with: date.to_s(:medium) + "\n"
+        click_on 'Invite'
+      end
+
+      page.within "#group_member_#{group_member_id(new_member)}" do
+        expect(page).to have_content('Expires in 4 days')
+      end
+    end
+  end
+
+  it 'change expiration date' do
+    travel_to Time.zone.parse('2016-08-06 08:00') do
+      date = 3.days.from_now
+      group.add_developer(new_member)
+
+      visit group_group_members_path(group)
+
+      page.within "#group_member_#{group_member_id(new_member)}" do
+        find('.js-access-expiration-date').set date.to_s(:medium) + "\n"
+        wait_for_requests
+        expect(page).to have_content('Expires in 3 days')
+      end
+    end
+  end
+
+  it 'remove expiration date' do
+    travel_to Time.zone.parse('2016-08-06 08:00') do
+      date = 3.days.from_now
+      group_member = create(:group_member, :developer, user: new_member, group: group, expires_at: date.to_s(:medium))
+
+      visit group_group_members_path(group)
+
+      page.within "#group_member_#{group_member.id}" do
+        find('.js-clear-input').click
+        wait_for_requests
+        expect(page).not_to have_content('Expires in 3 days')
+      end
+    end
+  end
+
+  def group_member_id(user)
+    group.members.find_by(user_id: new_member).id
+  end
+end