Remove useless "with_clean_env"

Author: benoittgt

features/support/env.rb

@@ -7,14 +7,12 @@ def run_command(cmd, timeout = nil)
     unset_bundler_env_vars
     # Ensure the correct Gemfile and binstubs are found
     in_current_directory do
-      with_unbundled_env do
-        super(exec_cmd, timeout)
-      end
+      super(exec_cmd, timeout)
     end
   end
 
   def unset_bundler_env_vars
-    empty_env = with_environment { with_unbundled_env { ENV.to_h } }
+    empty_env = with_environment { ENV.to_h }
     aruba_env = aruba.environment.to_h
     (aruba_env.keys - empty_env.keys).each do |key|
       delete_environment_variable key
@@ -23,14 +21,6 @@ def unset_bundler_env_vars
       set_environment_variable k, v
     end
   end
-
-  def with_unbundled_env
-    if Bundler.respond_to?(:with_unbundled_env)
-      Bundler.with_unbundled_env { yield }
-    else
-      Bundler.with_clean_env { yield }
-    end
-  end
 end
 
 World(ArubaExt)