Commit 79ca616 "pci: Cleanup configuration for pci-hotplug.c" (June 2013, released in v1.6.0) made linking pci-hotplug-old.o conditional on make variable CONFIG_PCI_HOTPLUG_OLD, and the actual monitor commands conditional on preprocessor macro CONFIG_PCI_HOTPLUG_OLD. Where is that macro defined?
In my local build: nowhere. The two commands are not available. Am I doing something wrong, or have the commands been gone for five major releases already? If the latter, I think we can safely drop them now :)