By default, we have added zoom effect to product images on My Wishlist page. In case you do not want this, you can easily remove it. Removing it requires adding following CSS code to Extra CSS page in Merchant Console.
Open Apps => Smart Wishlist => Configure Appearance => Extra CSS
Under the second style box, add the following code.
.product:hover .image img {
-webkit-transform: initial !important;
-ms-transform: initial !important;
-o-transform: initial !important;
transform: initial !important;
}