Get rid of useless :itself proc

This serves no purpose.

Author: byroot

activesupport/lib/active_support/continuous_integration.rb

@@ -79,7 +79,7 @@ def step(title, *command)
 
     # Returns true if all steps were successful.
     def success?
-      results.all?(&:itself)
+      results.all?
     end
 
     # Display an error heading with the title and optional subtitle to reflect that the run failed.