bench: Ensure all files are removed
bench: Ensure all files are removed

The rm_file function is not working properly, fix it.

Signed-off-by: Nikolay Nikolaev <5fb6ff14f2a3b931c007d120a649a55e86928f6a@virtualopensystems.com>

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