ice: adjust switchdev rebuild path

There is no need to use specific functions for rebuilding path. Let's
use current implementation by removing all representors and as the
result remove switchdev environment.

It will be added in devices rebuild path. For example during adding VFs,
port representors for them also will be created.

Rebuild control plane VSI before removing representors with INIT_VSI
flag set to reinit VSI in hardware after reset.

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>