🤖 Sync Liquid Docs Translations (#568)

Co-authored-by: shopify-dev-bot[bot] <95105344+shopify-dev-bot[bot]@users.noreply.github.com>

data/shopify_system_translations.json

@@ -311,7 +311,6 @@
  "shopify.checkout.contact.pincode_placeholder": "PIN code",
  "shopify.checkout.contact.civic_number_warning": "Add a house number if you have one",
  "shopify.checkout.contact.optional_last_name_label": "Last name (optional)",
- "shopify.checkout.contact.optional_recipient_label": "Attention (optional)",
  "shopify.checkout.contact.company_contact_info": "{{companyName}} · {{contact}}",
  "shopify.checkout.contact.different_shipping_address_label": "Ship to a different address",
  "shopify.checkout.contact.different_shipping_address_text": "Use a one-time address for this order",