[DRE-maint] ruby-sidekiq-limit-fetch is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-sidekiq-limit-fetch 3.4.0-3 is marked for autoremoval from testing on 2018-10-10

It (build-)depends on packages with these RC bugs:
853256: ruby-sidekiq: Switch form twitter-bootstrap to libjs-bootstrap (v2 to v3)