Please offe an optione to remove all EXIF data from selected files.
Implementing this allows for quickly removing data that should not be communicated to others.
This can be achieved using external editor feature (.desktop files calling external programs).
So i don't think we need to implement it, especially since Geeqie is more an image viewer than an image editor.
Geeqie does manipulate the metadata of files such as path, filename, orientation. Stripping EXIF data is in the same category and not manipulation of the image (what you see) itself.