Remove jruby from RELEASING
Remove jruby from RELEASING

Stable versions of jruby do not support Ruby 2.1 syntax.

farias-r7/metasploit_data_models,farias-r7/metasploit_data_models,bcook-r7/metasploit_data_models,rapid7/metasploit_data_models,farias-r7/metasploit_data_models,rapid7/metasploit_data_models,bcook-r7/metasploit_data_models,bcook-r7/metasploit_data_models,rapid7/metasploit_data_models