Hello there! Yes, very simple:
1- login to the account where you posted the question from, then delete the post. (see attachment)
2- copy the link of the page that posted on google, and request the outdate content removal (After you delete it from Squarespace) here's the link to google content removal: https://search.google.com/search-console/remove-outdated-content?utm_source=wmx&utm_medium=deprecation-pane&utm_content=removals
3- 1-2 days and content is removed from google! 💃 🍾