DIY & Home Improvement

Assuming the switch on the wall is a normal light switch, you may want to wire it to the new fan so that you can turn the light/fan on or off without the remote. You might lose the remote, or the batteries might run out, or similar issue.

Most of the time you'd leave the switch on, but having the option to turn it off at the wall can be very helpful.

If you're absolutely, positively sure you will never use the wall switch, you can take it out but you can't just 'cap off' the wires. Those wires are what is supplying power to the box on the ceiling where you will be installing the fan. You'll need to connect the blacks together and the whites together in order to supply power to the ceiling box. Then you can put a "blank" cover on the wall.

If the wall switch is a controller specific to the old fan and not a normal light switch, what you do will unfortunately depend on the old fan - there isn't any way to tell what the wiring is like without pulling the wall switch out of the box and looking.