testing: pkg/signal; remove redundant fmt.Sprintf()
testing: pkg/signal; remove redundant fmt.Sprintf()

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

djs55/docker,nawawi/docker,jvanz/docker,flavio/docker,justincormack/docker,jwhonce/docker,moby/moby,scotttlin/docker,ibuildthecloud/docker,konstruktoid/docker-1,Mokolea/docker,moul/docker,Ramzec/docker,pradipd/moby,jimjag/docker,mikebrow/docker,jlhawn/docker,Mokolea/docker,trebonian/docker,x1022as/docker,docker/docker,nawawi/docker,AkihiroSuda/docker,maxamillion/docker,kojiromike/docker,paralin/docker,dims/docker,rancher/docker,mikebrow/docker,paralin/docker,flavio/docker,thaJeztah/docker,paralin/docker,yosifkit/docker,tmp6154/docker,gnailuy/docker,konstruktoid/docker-1,yongtang/docker,nawawi/docker,nalind/docker,mikebrow/docker,rancher/docker,tmp6154/docker,konstruktoid/docker-upstream,maxamillion/docker,estesp/docker,jameszhan/docker,kolyshkin/moby,vdemeester/docker,rancher/docker,estesp/docker,konstruktoid/docker-upstream,jvanz/docker,moby/moby,cpuguy83/docker,KarthikNayak/docker,thaJeztah/docker,scotttlin/docker,rremer/moby,nalind/docker,AkihiroSuda/docker,rremer/moby,dims/docker,cpuguy83/docker,mahak/docker,jlhawn/docker,djs55/docker,flavio/docker,cpuguy83/docker,yosifkit/docker,jimjag/docker,kojiromike/docker,Ramzec/docker,rremer/moby,Mokolea/docker,bearstech/moby,Mokolea/docker,kolyshkin/moby,yongtang/docker,SvenDowideit/docker,bearstech/moby,gnailuy/docker,jwhonce/docker,tmp6154/docker,unclejack/docker,jimjag/docker,konstruktoid/docker-upstream,jimjag/docker,bearstech/moby,mahak/docker,jameszhan/docker,jthelin/docker,vdemeester/docker,moby/moby,nalind/docker,crosbymichael/docker,vdemeester/docker,cpuguy83/docker,docker/docker,nawawi/docker,AkihiroSuda/docker,Ramzec/docker,yosifkit/docker,pradipd/moby,kojiromike/docker,kolyshkin/moby,jwhonce/docker,justincormack/docker,yongtang/docker,ibuildthecloud/docker,trebonian/docker,KarthikNayak/docker,gnailuy/docker,jvanz/docker,trebonian/docker,maxamillion/docker,SvenDowideit/docker,trebonian/docker,konstruktoid/docker-1,crosbymichael/docker,djs55/docker,jameszhan/docker,KarthikNayak/docker,SvenDowideit/docker,unclejack/docker,x1022as/docker,Ramzec/docker,dims/docker,docker/docker,moby/moby,gnailuy/docker,jthelin/docker,thaJeztah/docker,mahak/docker,thaJeztah/docker,ibuildthecloud/docker,x1022as/docker,ibuildthecloud/docker,unclejack/docker,flavio/docker,nalind/docker,yosifkit/docker,paralin/docker,bearstech/moby,moul/docker,ibuildthecloud/docker,justincormack/docker,crosbymichael/docker,pradipd/moby,jlhawn/docker,moul/docker,mahak/docker,konstruktoid/docker-upstream,scotttlin/docker,moul/docker,AkihiroSuda/docker,estesp/docker