How to reduce the File storage size (delete profile image)

I found the following. It doesn’t answer whether deleting a profile image actually deletes the files internally.
It simply states, “Over time, your old profile image will become inaccessible.”
I’d like to know if deleting all profile images or updating them to a URL from a repository other than Sendbird’s server will reduce the file storage size.

# How do you remove the user’s profile image?

post by HTC on Mar 4, 2022

I uploaded the user’s profile image using profile_file. This automatically generated and populated profile_url.

My question is how do you remove the user’s profile image? Passing an empty string in profile_url works, but the file is actually still on Sendbird’s server (pasting the url in a browser still loads the photo). However, this is not ideal as I assume the file still counts against our storage limit.

Is there a way to reset profile_file and actually delete the file?