simplify

builder/oracle/classic/step_create_instance.go

@@ -78,5 +78,4 @@ func (s *stepCreateInstance) Cleanup(state multistep.StateBag) {
 	}
 	// TODO wait for instance state to change to deleted?
 	ui.Say("Terminated instance.")
-	return
 }

builder/oracle/classic/step_security.go

@@ -92,6 +92,4 @@ func (s *stepSecurity) Cleanup(state multistep.StateBag) {
 		ui.Say(fmt.Sprintf("Error deleting the packer-generated security list %s; "+
 			"please delete manually. (error : %s)", secListName, err.Error()))
 	}
-
-	return
 }