This never worked as intended, it was evaluated at build time

Removing since we're no longer concerned about Ruby < 2.2.2

Author: bdunne

Gemfile

@@ -2,7 +2,3 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in linux_admin.gemspec
 gemspec
-
-# HACK: Rails 5 dropped support for Ruby < 2.2.2
-active_support_version = "< 5" if Gem::Version.new(RUBY_VERSION) < Gem::Version.new("2.2.2")
-gem 'activesupport', active_support_version