tests: remove constant argument
tests: remove constant argument

Reduce number of arguments by removing an argument which is only ever
used with same constant value.

Type: refactor
Signed-off-by: Klement Sekera <e142cc48b4b76dcd76b0aac57013c9dea9c2e536@gmail.com>
Signed-off-by: Dave Wallace <0ed937c0e4b2f09f7bc24acf16cee52b8a199d5f@gmail.com>
Change-Id: I061635b28031d75eb1f853b570e85f6e5a9094df

FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp