Just leave it to melt.
To melt the ice in Yunzabit Heights, you can use a Fire Flower power-up by activating it and directing the fire at the ice blocks. Alternatively, you can look for a nearby source of heat or fire to melt the ice.
A fire (heat!)
make a fire
fire can melt ice plainly just leaving ice out on the counter top will melt it holding ice in the palm of your hand will melt it putting ice in a microwave/oven/mini oven putting ice outside in a hot day/warm sun(if its not cold out) putting ice in a hot liquid
There is no way to melt ice without heat. If you see ice melting, you know that it is absorbing heat. There is no other way for this to happen.
Heat such as fire and boiling water
You get that item in icefall cave its the item to the right of the big ice room.
One way to melt ice without salt or heat is by using friction. Rubbing the ice with a rough object or smashing it can generate enough heat to melt the ice. Another method is using pressure by placing a heavy object on the ice to break it down and accelerate the melting process.
space is a vacuum. no air means no friction. without friction the ice doesn't melt
To melt a block of ice in Super Mario 64, you can use the Fire Flower power-up to shoot fireballs at the ice block until it melts. Another method is to lure a nearby enemy like a flamethrower or a lava-spitting enemy to melt the ice for you.
you need to be Yoshi who can get a power flower or eat one of those balls with the faces on them to breathe fire and melt the ice
You might turn off the freezer.