x86_64: remove "pcie_ports=native" command line
x86_64: remove "pcie_ports=native" command line

Since _OSC is added, OS could negotiate any pcie features with firmware
through _OSC, so remove "pcie_ports=native" parameter from command line.

BUG=b:197877871
TEST=check pcie native hotplug compability in VM

Change-Id: Iba363aa0d5c6acaf61d72ed9cc4697677f9ace6c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/3305946
Tested-by: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Commit-Queue: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm