usb, chipidea: remove redundant D0 power state set

Pci_enable_device() will set device power state to D0,
so it's no need to do it again in ci13xxx_pci_probe().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>