Let redis cache keys expire after Bulk Import is finished

app/models/bulk_imports/entity.rb

@@ -66,16 +66,6 @@ class BulkImports::Entity < ApplicationRecord
     event :fail_op do
       transition any => :failed
     end
-
-    after_transition any => [:finished, :failed] do |entity|
-      Gitlab::Redis::Cache.with do |redis|
-        pattern = "bulk_import:#{entity.bulk_import.id}:entity:#{entity.id}:*"
-
-        redis.scan_each(match: pattern).each do |key|
-          redis.del(key)
-        end
-      end
-    end
   end
 
   def update_tracker_for(relation:, has_next_page:, next_page: nil)

spec/models/bulk_imports/entity_spec.rb

@@ -189,20 +189,4 @@ RSpec.describe BulkImports::Entity, type: :model do
       expect(entity.next_page_for(:relation)).to eq('nextPage')
     end
   end
-
-  describe 'caching', :clean_gitlab_redis_cache do
-    let(:entity) { create(:bulk_import_entity, :started) }
-
-    it 'removes entity cache keys' do
-      cache_key = "bulk_import:#{entity.bulk_import.id}:entity:#{entity.id}:relation:1"
-
-      Gitlab::Redis::Cache.with do |redis|
-        redis.set(cache_key, 1)
-
-        expect(redis).to receive(:del).with(cache_key)
-      end
-
-      entity.finish!
-    end
-  end
 end