Removing a specific default hotkey / shortcut via a script?

I opened a topic there How to modify a key and register another key at the same time in an addon?
can you provide an example where you disable(modify) a default key and register a new one at the same time, when registering an addon? I tried with a timer, but I couldn’t figure it out. and I’m confused about what map to use. I use user map “kc = wm.keyconfigs.user” but I don’t know if it is working on any configuration? I mean if you don’t create your own settings? I’m quite lost with this key part…