Always require pry gems in rails_helper

* remove IMPROVED_SPEC_DEBUGGING env var guard

spec/rails_helper.rb

@@ -8,11 +8,9 @@ end
 require 'rubygems'
 require 'rbtrace'
 
-if ENV['IMPROVED_SPEC_DEBUGGING']
-  require 'pry'
-  require 'pry-byebug'
-  require 'pry-rails'
-end
+require 'pry'
+require 'pry-byebug'
+require 'pry-rails'
 
 # Loading more in this block will cause your tests to run faster. However,
 # if you change any configuration or code from libraries loaded here, you'll