iPod touch is more complicated than the other versions of iPods. Some
people can only delete files from iPod touch with iTunes. Now follow
the below steps:
>>> Insert or enter the app in your iPod Touch where the files you want to delete are located, and locate the particular file you want to delete.
>>> Now, take or swipe the file to the right or left and a red delete button will appear. Hit the delete button.
*** If the file you want to delete is a photo, visit the album where
your photos are stored. Click the arrow located at the bottom left of
your iPod screen.
>>> Now, locate the photo(s) you want to delete and select by tapping them.
>>> Hit the red delete button located at the bottom of your iPod Touch screen, and you are done!