Remove rspec_json_dumper

We're not actually running the CI environment for this
gem that would use this gem.

Author: mistydemeo

Gemfile

@@ -4,6 +4,5 @@ gem 'rails', '~> 4.0'
 
 group :development, :test do
   gem "rspec-rails", "~> 3"
-  gem "rspec_json_dumper", "~> 0.1"
   gem "pry", "~> 0"
 end

chatops-controller.gemspec

@@ -20,6 +20,5 @@ Gem::Specification.new do |s|
   s.add_dependency "rails", ">= 4.0"
 
   s.add_development_dependency "rspec-rails", "~> 3"
-  s.add_development_dependency "rspec_json_dumper", "~> 0.1"
   s.add_development_dependency "pry", "~> 0"
 end