[App size reduction] Remove shipping image duplication (#15788)

Author: iamgabrielma

WooCommerce/Classes/ViewModels/Order Details/Shipping Labels/ShippingLabelPrintingInstructionsView.swift

@@ -7,7 +7,7 @@ struct ShippingLabelPrintingInstructionsView: View {
             VStack {
                 Spacer()
                     .frame(height: 20)
-                Image("woo-shipping-label-printing-instructions")
+                Image(uiImage: .shippingLabelCreationInfoImage)
                 Spacer()
                     .frame(height: 30)
                 ShippingLabelPrintingStepListView()

WooCommerce/Classes/ViewRelated/Orders/Order Details/Shipping Labels/Print Customs Form/PrintCustomsFormsView.swift

@@ -23,7 +23,7 @@ struct PrintCustomsFormsView: View {
                     .bodyStyle()
                     .padding(.top, Constants.verticalSpacing)
                 VStack(spacing: Constants.verticalSpacing) {
-                    Image("woo-shipping-label-printing-instructions")
+                    Image(uiImage: .shippingLabelCreationInfoImage)
                     Text(invoiceURLs.count == 1 ? Localization.singlePrintingMessage : Localization.printingMessage)
                         .bodyStyle()
                         .multilineTextAlignment(.center)