Revert "Pcap savefile writer records frame sizes"
Revert "Pcap savefile writer records frame sizes"

This reverts commit c6d0e2296f1e90438b42be052aaee14ab18c62ff.  It's a
good change but we would need to update all savefiles in tree to
update test expectations.

dpino/snabb,alexandergall/snabbswitch,SnabbCo/snabbswitch,Igalia/snabb,dpino/snabb,Igalia/snabb,snabbco/snabb,dpino/snabb,alexandergall/snabbswitch,eugeneia/snabbswitch,Igalia/snabbswitch,snabbco/snabb,eugeneia/snabb,Igalia/snabbswitch,dpino/snabb,eugeneia/snabb,Igalia/snabb,Igalia/snabbswitch,SnabbCo/snabbswitch,alexandergall/snabbswitch,alexandergall/snabbswitch,eugeneia/snabb,SnabbCo/snabbswitch,dpino/snabb,Igalia/snabb,Igalia/snabb,dpino/snabbswitch,snabbco/snabb,Igalia/snabb,snabbco/snabb,eugeneia/snabb,SnabbCo/snabbswitch,alexandergall/snabbswitch,Igalia/snabbswitch,eugeneia/snabbswitch,dpino/snabbswitch,eugeneia/snabb,eugeneia/snabbswitch,eugeneia/snabb,dpino/snabb,dpino/snabb,snabbco/snabb,eugeneia/snabb,snabbco/snabb,alexandergall/snabbswitch,Igalia/snabb,snabbco/snabb,snabbco/snabb,Igalia/snabb,dpino/snabbswitch,eugeneia/snabbswitch,alexandergall/snabbswitch,Igalia/snabbswitch,alexandergall/snabbswitch,eugeneia/snabb,dpino/snabbswitch