net: x25: drop harmless check of !more

'more' is checked first.  When !more is checked immediately after that,
it is always true.  We should drop this check.

Signed-off-by: Jean Sacren <sakiwit@gmail.com>
Acked-by: Martin Schiller <ms@dev.tdt.de>
Link: https://lore.kernel.org/r/20211208024732.142541-5-sakiwit@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>