test/nvmf: Remove duplicated code target second port.

This is already defined in nvmf common file. so remove it.

Signed-off-by: yidong0635 <dongx.yi@intel.com>
Change-Id: I40b003c8361fe889e9ed6a2add9878e362b5e966
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4056


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Community-CI: Broadcom CI