Remove dead code

card-cardos.c:304:3: warning: Value stored to 'r' is never read
                r = 256;
                ^   ~~~


git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@5164 c6295689-39f2-0310-b995-f0e70906c6a9

src/libopensc/card-cardos.c

@@ -301,7 +301,6 @@ get_next_part:
 
 	if (apdu.resplen > 256) {
 		sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "directory listing > 256 bytes, cutting");
-		r = 256;
 	}
 
 	len = apdu.resplen;