Deleting Files with Long File names in Windows

[ZF]

When deleting, if the error "Source Path Too Long" : The source filename(s) are longer than is supported by the file system. Try moving to a location which has a shorter path name, or try renaming them to shorter names before attempting this operation.

Do the following:
mkdir empty_dir
robocopy empty_dir the_dir_to_delete /s /mir
rmdir empty_dir
rmdir the_dir_to_delete