[lib.hardware.pci] Remove `open_usable_devices' (unused and broken).
[lib.hardware.pci] Remove `open_usable_devices' (unused and broken).

lukego/snabb,alexandergall/snabbswitch,wingo/snabb,dwdm/snabbswitch,eugeneia/snabbswitch,wingo/snabbswitch,snabbnfv-goodies/snabbswitch,hb9cwp/snabbswitch,pavel-odintsov/snabbswitch,SnabbCo/snabbswitch,snabbco/snabb,dpino/snabbswitch,dpino/snabb,wingo/snabb,eugeneia/snabb,fhanik/snabbswitch,heryii/snabb,snabbco/snabb,justincormack/snabbswitch,lukego/snabbswitch,wingo/snabb,kellabyte/snabbswitch,andywingo/snabbswitch,kbara/snabb,snabbco/snabb,dwdm/snabbswitch,lukego/snabbswitch,virtualopensystems/snabbswitch,plajjan/snabbswitch,eugeneia/snabb,alexandergall/snabbswitch,javierguerragiraldez/snabbswitch,lukego/snabbswitch,andywingo/snabbswitch,kbara/snabb,andywingo/snabbswitch,Igalia/snabbswitch,Igalia/snabb,dpino/snabb,eugeneia/snabb,virtualopensystems/snabbswitch,dpino/snabb,pavel-odintsov/snabbswitch,Igalia/snabbswitch,Igalia/snabb,snabbnfv-goodies/snabbswitch,Igalia/snabb,pavel-odintsov/snabbswitch,kellabyte/snabbswitch,alexandergall/snabbswitch,pirate/snabbswitch,kellabyte/snabbswitch,kbara/snabb,eugeneia/snabbswitch,javierguerragiraldez/snabbswitch,mixflowtech/logsensor,alexandergall/snabbswitch,pirate/snabbswitch,wingo/snabbswitch,andywingo/snabbswitch,aperezdc/snabbswitch,snabbco/snabb,plajjan/snabbswitch,hb9cwp/snabbswitch,justincormack/snabbswitch,lukego/snabb,lukego/snabbswitch,SnabbCo/snabbswitch,eugeneia/snabbswitch,SnabbCo/snabbswitch,dpino/snabbswitch,Igalia/snabb,xdel/snabbswitch,lukego/snabb,dpino/snabbswitch,wingo/snabb,Igalia/snabb,wingo/snabb,javierguerragiraldez/snabbswitch,heryii/snabb,alexandergall/snabbswitch,dpino/snabb,snabbco/snabb,hb9cwp/snabbswitch,dpino/snabbswitch,Igalia/snabb,plajjan/snabbswitch,wingo/snabbswitch,alexandergall/snabbswitch,eugeneia/snabb,alexandergall/snabbswitch,alexandergall/snabbswitch,snabbnfv-goodies/snabbswitch,xdel/snabbswitch,dwdm/snabbswitch,aperezdc/snabbswitch,Igalia/snabbswitch,mixflowtech/logsensor,mixflowtech/logsensor,Igalia/snabb,Igalia/snabb,virtualopensystems/snabbswitch,eugeneia/snabb,fhanik/snabbswitch,eugeneia/snabb,wingo/snabb,justincormack/snabbswitch,wingo/snabbswitch,mixflowtech/logsensor,heryii/snabb,eugeneia/snabb,kbara/snabb,lukego/snabb,plajjan/snabbswitch,kbara/snabb,fhanik/snabbswitch,justincormack/snabbswitch,heryii/snabb,pirate/snabbswitch,eugeneia/snabbswitch,aperezdc/snabbswitch,dpino/snabb,Igalia/snabbswitch,aperezdc/snabbswitch,dpino/snabb,xdel/snabbswitch,mixflowtech/logsensor,hb9cwp/snabbswitch,snabbco/snabb,Igalia/snabbswitch,SnabbCo/snabbswitch,eugeneia/snabb,snabbnfv-goodies/snabbswitch,snabbco/snabb,heryii/snabb,dpino/snabb,kbara/snabb,heryii/snabb,snabbco/snabb