Revert "net: macsec: indicate next pn update when offloading"

This reverts commit 667fe910 which is
commit 0412cc84 upstream.

It breaks the Android KABI and is not needed at this time for any
Android-relevant systems.

Bug: 161946584
Change-Id: Ie12bd23d4099bec4dfebb062947ef7d1ea299d9b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>