test: dm: pci: Remove unnecessary steps in dm_test_pci_swapcase()

The check on uclass_get_device() and device_active() is unnecessary
as the follow-up test operations will implicitly probe the driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed