Unless you have files which are missing (like pics you knew you had, but can't find), it's probably fine to delete the files.
Scandisk will create these files/folders after an OS crash or improper shutdown routine, so they may just contain stuff like web cache files, and temp files created when opening apps that weren't properly shut down in the event of a crash.
If you haven't missed any files, and don't recall losing important work due to a crash, then by all means delete them and save space.
Cheers
Mick