Remove cucumber monkey patch translating steps:

It was initially added to allow reuse of aruba cucumber steps, using
`must' instead of `should'. This is creating more harm than good, hence
we remove it and implements all missing steps, using aruba API.

features/steps/recipe_steps.rb

@@ -1,16 +1,16 @@
-Given(/^a recipe with:$/) do |recipe_body|
+Given /^a recipe with:$/ do |recipe_body|
   write_file 'recipe.rb', recipe_body
 end
 
-When(/^I execute the recipe$/) do
-  run_simple('producer recipe.rb', false)
+When /^I execute the recipe$/ do
+  run_simple 'producer recipe.rb', false
 end
 
-When(/^I successfully execute the recipe$/) do
+When /^I successfully execute the recipe$/ do
   step 'I execute the recipe'
-  assert_exit_status(0)
+  assert_exit_status 0
 end
 
-When(/^I execute the recipe interactively$/) do
-  run_interactive('producer recipe.rb')
+When /^I execute the recipe interactively$/ do
+  run_interactive 'producer recipe.rb'
 end