Remove root user 100 project limit to rely on default 100,000

See https://gitlab.com/gitlab-org/gitlab-ce/issues/43271

db/fixtures/development/01_admin.rb

@@ -9,7 +9,6 @@ Gitlab::Seeder.quiet do
     s.username = 'root'
     s.password = '5iveL!fe'
     s.admin = true
-    s.projects_limit = 100
     s.confirmed_at = DateTime.now
   end
 end