In the new version(5.7) of NotePad++, the convert to UNIX format function is missing in its usual menu link which is
Encoding --> Convert to UNIX
For those doing shell scripting and related things, this is very important. The convertion of CRLF to LF is a pain and NotePad++ is a saviour(ok, other text editors can do that, too). So fret not, fretful folks, they just moved. It is now in the menu link below.
As to why it was moved there is beyond me in terms of usability. But it's a free software so we can just sigh.
Here's the source of information