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

[Debian testing autoremoval watch]

ruby-parser 3.6.6-1 is marked for autoremoval from testing on 2016-09-09

It is affected by these RC bugs:
832604: ruby-parser: FTBFS: 2915 runs, 14956 assertions, 70 failures, 0 errors, 12 skips