Depends on what you mean by “celebrate”. It’s not like it’s ignored. A nice family dinner is certainly had etc. Often times it does fall on GC weekend, etc.
But is it hugely celebrated with the profound sense of “ALLELUJAH” that many other denominations celebrate it? No, not really.
For Catholics, remember we have been observing Lent, have just gone thru Holy Week and the Triduum, so our “GLORY TO GOD IN THE HIGHEST” and “ALLELUJAH” is all the more pronounced.
One thing that is often emphasized in Mormonism around the Easter time is the fact that the LDS Church was formally founded on April 6th, 1830. So that is often a focus.
But I wouldnt blatantly proclaim that “Mormons do not celebrate Easter”. They do. Just not profoundly as others.