Publishing house FirstLook believe so. Writing to a church which had used their curriculum the publisher stated:
Easter is a special time in churches. It's a time of celebration and thankfulness. But because of the graphic nature of the Easter story and the crucifixion specifically, we need to be careful as we choose what we tell preschoolers about Easter.
I recommend that you read Russell Moore's blog-post on this issue - Silly Rabbit, Easter's Not for Kids.
All I will say is that one cannot and must not delete the crucifixion from the Gospel; no matter who (or how old) the audience is. If there is no Crucifixion and Resurrection, there is no Gospel.
(HT: Tim Ellsworth)