Do not cast unused return values to void

A small style fix that removes all remaining "(void)" casts. Using these
isn't encouraged in GNU coding guidelines and doesn't serve a certain
purpose, except for satisfying a few static code analysis tools. We
already nuked some of these in previous patches, but this semantic patch
should fix what's left:

    @@
    identifier func;
    @@

    - (void)func (
    + func (
    ...);

Long lines were re-formatted manually.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

src/note.c

@@ -94,7 +94,7 @@ view_note (char *note, char *pager)
 
   if (note == NULL)
     return;
-  (void)snprintf (fullname, BUFSIZ, "%s%s", path_notes, note);
+  snprintf (fullname, BUFSIZ, "%s%s", path_notes, note);
   wins_launch_external (fullname, pager);
 }