This language patch was included into the base library meanwhile so the patch is not needed anymore as extra file.
Here's the situation: I've already been in touch with the original plugin author, and, including another one of his plugins: https://www.esoui.com/downloads/info...atch.html#info, the language files have been integrated into the original plugins themselves. I'm not sure how to remove this patch. If possible, please go ahead and delete them