Lighting, Light Fixtures, Ceiling and Exhaust Fans - Removing a Ceiling Fan

We have a ceiling fan that runs off of one wall switch. We would like to remove the fan and patch the hole in the ceiling that will be left. We are plainning on updating our lighting in the room in a year or two, so I don't want to remove either the switch or the wiring, but I know I cannot leave a live wire in the ceiling.
Can I just disconnect the wiring going from the switch to the fan, or is it more complicated than that?

Thanks in advance for all help!!

You have not provided enough information for a complete answer.

If the wiring to the ceiling is a single cable from the switch then you could push the cable completely out of the switch box and then patch the hole in the ceiling.

However, if the wiring at the ceiling is more than one cable then you can't patch the hole in the ceiling until and unless you figure out where the wiring comes from (or where it goes) and decide how to deal with that.

The easiest solution for you is to simply put a blank cover over the ceiling box, leaving all the wires intact, just putting wire nuts over ones that used to connect to the fan.

If you are 100% sure that the cable going from the switch goes to the ceiling, and that there are no other wires in the ceiling other than these (and that's not as certain as you probably think it is), then you can disconnect the wires from the switch and push them out of the switch box. Then you can patch the hole in the ceiling (but not the hole in the wall).

I strongly recommend, however, that you simply cap off the wires in the ceiling box and put a blank cover plate over it. It will be much simpler, cheaper and safer than your current plans, and it offers you many more options for the future. And it will be almost as invisible as patching the hole.