test/vhost: remove unused bdev_pci.conf

This config file was not used in any tests.

Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I8e32346dcb05fd68f7f64d2a7b4907bb8d80a5d2
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4618


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>