Additional code to remove Qty 1 and Add to Cart:
<style>
.quantity-input,
.quantity-selector,
.quantity-input-wrapper,
.product-quantity-input,
.quantity,
.product-quantity,
.sqs-quantity-input {
display: none !important;
}
.sqs-add-to-cart-button,
.add-to-cart-button,
.ProductItem-details-form .ProductItem-cart-quantity .sqs-add-to-cart-button {
display: none !important;
}
</style>