How can I delete "/usr/local/.com.apple.installer.keep"

I tried to uninstall homebrew on MacOS Catalina. But I couldn’t find “/usr/local/.com.apple.installer.keep” file. How can I find and delete it?

If it doesn’t exist, then there’s no need to delete it. Is there something else that’s breaking because of this missing (and empty) file?

Thank you for your reply. Ironically, there is nothing occurred. So based on your comment, I rather think it can be negligible if I can’t find that file.
But why it shows after uninstalling homebrew on MacOS. Is it a kind of a bug from homebrew?