Stop checking migration version in project factory

Since we've truncated the migrations after 2018-12-28
(see db/migrate/20181228175414_init_schema.rb) we can safely remove this
check which reduces the query count for a project factory by 1.

spec/factories/projects.rb

@@ -3,8 +3,6 @@
 require_relative '../support/helpers/test_env'
 
 FactoryBot.define do
-  PAGES_ACCESS_LEVEL_SCHEMA_VERSION ||= 20180423204600
-
   # Project without repository
   #
   # Project does not have bare repository.
@@ -54,13 +52,10 @@ FactoryBot.define do
         issues_access_level: evaluator.issues_access_level,
         forking_access_level: evaluator.forking_access_level,
         merge_requests_access_level: merge_requests_access_level,
-        repository_access_level: evaluator.repository_access_level
+        repository_access_level: evaluator.repository_access_level,
+        pages_access_level: evaluator.pages_access_level
       }
 
-      if ActiveRecord::Migrator.current_version >= PAGES_ACCESS_LEVEL_SCHEMA_VERSION
-        hash.store("pages_access_level", evaluator.pages_access_level)
-      end
-
       project.project_feature.update!(hash)
 
       # Normally the class Projects::CreateService is used for creating