Remove idempotency assert for sd2u(1df)/su2d(1df)

Commit cd8e9cc applies a cleaner implementation of these tools but loses
the idempotency:

* Repeated su2d applications will result in double \r, so \r\r\n
* Repeated s2ru applications will result in an extra newline at the end
  of the file, because the whole file will be interpreted as one line

However, I am OK with this, as I think of the operation as simpler and
more predictable, and I wouldn't apply it as a means to "force" a file
of unknown or various line-ending types to one type.

0 files changed, 0 insertions, 0 deletions