On comment post, remove image attachment

[DRSDavidSoft]

1. Add image with Add Image
2. Type the comment
3. Click Add Comment
4. Wait for the comment to be posted
5. The textarea gets cleared (for the next comment to be typed, I assume)
6. I think the attached image should be removed if the textarea gets cleared (e.g. The event of Remove Image on teaxtarea's value get removed)