Remove temporary cookie to db invite user banner dismissal method

- no longer necessary as the time has passed to enable easy
  migration from cookies to db for this dismissal.

app/helpers/user_callouts_helper.rb

@@ -81,32 +81,11 @@ module UserCalloutsHelper
   def user_dismissed_for_group(feature_name, group, ignore_dismissal_earlier_than = nil)
     return false unless current_user
 
-    set_dismissed_from_cookie(group)
-
     current_user.dismissed_callout_for_group?(feature_name: feature_name,
                                               group: group,
                                               ignore_dismissal_earlier_than: ignore_dismissal_earlier_than)
   end
 
-  def set_dismissed_from_cookie(group)
-    # bridge function for one milestone to try and not annoy users who might have already dismissed this alert
-    # remove in 14.4 or 14.5? https://gitlab.com/gitlab-org/gitlab/-/issues/340322
-    dismissed_key = "invite_#{group.id}_#{current_user.id}"
-
-    if cookies[dismissed_key].present?
-      params = {
-        feature_name: INVITE_MEMBERS_BANNER,
-        group_id: group.id
-      }
-
-      Users::DismissGroupCalloutService.new(
-        container: nil, current_user: current_user, params: params
-      ).execute
-
-      cookies.delete dismissed_key
-    end
-  end
-
   def just_created?
     flash[:notice]&.include?('successfully created')
   end

spec/helpers/user_callouts_helper_spec.rb

@@ -216,20 +216,6 @@ RSpec.describe UserCalloutsHelper do
       context 'when the invite_members_banner has not been dismissed' do
         it { is_expected.to eq(true) }
 
-        context 'when a user has dismissed this banner via cookies already' do
-          before do
-            helper.request.cookies["invite_#{group.id}_#{user.id}"] = 'true'
-          end
-
-          it { is_expected.to eq(false) }
-
-          it 'creates the callout from cookie', :aggregate_failures do
-            expect { subject }.to change { Users::GroupCallout.count }.by(1)
-            expect(Users::GroupCallout.last).to have_attributes(group_id: group.id,
-                                                        feature_name: described_class::INVITE_MEMBERS_BANNER)
-          end
-        end
-
         context 'when the group was just created' do
           before do
             flash[:notice] = "Group #{group.name} was successfully created"