You can hide them by using following css

.content-boxes .more
{
display:none;
}

Instead of editing the woocommerce-hooks.php file, if possible create a child theme and then add the following code in functions.php file

function wc_remove_related_products( $args ) {
return array();
}
add_filter('woocommerce_related_products_args','wc_remove_related_products', 10);

How are you specifying the images in the post? Is it through featured image option?

For the alora-row instead of margin-top:-10px; make it margin-top:-80px; and increase the top space in the image logo91.png so that the hanger is slightly lower in the image.

The following css should take care of table shadows.

table:before
{
background:none;
}