[DRE-maint] ruby-js-routes is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-js-routes 1.3.3-1 is marked for autoremoval from testing on 2017-08-18

It is affected by these RC bugs:
869042: ruby-js-routes: FTBFS: ERROR: Test "ruby2.3" failed: Invalid gemspec in [js-routes.gemspec]: No such file or directory - git