If you are really sure they are ok to delete and you cannot delete them the normal way have a look at this site
click here have used it and it works well BUT you must be sure it's ok to delete the folder in question first.
Best phone camera 2017
Stunning new film posters by Hattie Stewart, Joe Cruz & more
iPad Pro 10.5in (2017) review
28 astuces pour profiter au mieux de votre iPhone