I maintain a client's website, and at the beginning he insisted that he wanted two tld extensions on the same website (.gr and .com). I thought it was weird, but not having any idea on what was about to happen I agreed to make it as the client wanted.
After weeks of struggling with Google not indexing my page, I found out that Google does not like duplicate pages, which happened because I had both properties of https gr and https com pointing to the same site.
I made the gr domain (http) to redirect to https .com so that this would fix the issue. Right now, Google has indexed the https gr domain, even though I have deleted the property from Search Console, which domain does not work at all (following the link leads to an error). How can I make Google forget the https gr domain?