Update script tells you to remove a file, but doesn't tell you where it's located

[puurinternet]

Hello,

After running the update for this extension I get this notification:

First of all, you should program this that it gets removed when the installer runs.
Second, it doesn't tell where the file is located. Joomla doesn't have a root "fields" folder so it's probably in your extension folder but I'm not the person that installed this, just the guy that updates stuff. So I have no clue if it's an plugin/module/component so won't know where to look for this file.
Third, not everybody has ssh or ftp access on their hosting account, how should they remove this?

Please do this differently next time.