Remove backward compatibility code

And the corresponding tests.

ee/app/workers/geo/batch/project_registry_scheduler_worker.rb

@@ -19,13 +19,6 @@ module Geo
       DELAY_INTERVAL = 10.seconds.to_i # base delay for scheduling batch execution
 
       def perform(operation)
-        # TODO: This is a temporary workaround for backward compatibility
-        # to avoid jobs that have been already scheduled to fail.
-        # See https://gitlab.com/gitlab-org/gitlab/issues/13318
-        if operation.to_sym == :recheck_repositories
-          operation = :reverify_repositories
-        end
-
         return fail_invalid_operation!(operation) unless OPERATIONS.include?(operation.to_sym)
 
         try_obtain_lease do

ee/app/workers/geo/batch/project_registry_worker.rb

@@ -15,13 +15,6 @@ module Geo
       OPERATIONS = [:resync_repositories, :reverify_repositories].freeze
 
       def perform(operation, range)
-        # TODO: This is a temporary workaround for backward compatibility
-        # to avoid jobs that have been already scheduled to fail.
-        # See https://gitlab.com/gitlab-org/gitlab/issues/13318
-        if operation.to_sym == :recheck_repositories
-          operation = :reverify_repositories
-        end
-
         case operation.to_sym
         when :resync_repositories
           resync_repositories(range)

ee/spec/workers/geo/batch/project_registry_scheduler_worker_spec.rb

@@ -16,17 +16,6 @@ RSpec.describe Geo::Batch::ProjectRegistrySchedulerWorker do
   end
 
   describe '#perform' do
-    context 'when operation is :recheck_repositories' do
-      let!(:registry) { create(:geo_project_registry, :repository_verified) }
-
-      it 'schedules batches of repositories for reverify' do
-        Sidekiq::Testing.fake! do
-          expect { subject.perform(:recheck_repositories) }.to change(Geo::Batch::ProjectRegistryWorker.jobs, :size).by(1)
-          expect(Geo::Batch::ProjectRegistryWorker.jobs.last['args']).to include('reverify_repositories')
-        end
-      end
-    end
-
     context 'when operation is :reverify_repositories' do
       let!(:registry) { create(:geo_project_registry, :repository_verified) }
 

ee/spec/workers/geo/batch/project_registry_worker_spec.rb

@@ -14,18 +14,6 @@ RSpec.describe Geo::Batch::ProjectRegistryWorker do
   describe '#perform' do
     let(:range) { [0, registry.id] }
 
-    context 'when operation is :recheck_repositories' do
-      let!(:registry) { create(:geo_project_registry, :repository_verified) }
-
-      it 'flags repositories for reverify' do
-        Sidekiq::Testing.inline! do
-          subject.perform(:recheck_repositories, range)
-        end
-
-        expect(registry.reload.repository_verification_pending?).to be_truthy
-      end
-    end
-
     context 'when operation is :reverify_repositories' do
       let!(:registry) { create(:geo_project_registry, :repository_verified) }