Revert "usb: dwc3: rockchip: fix otg plug out error before resume"

Revert "usb: dwc3: rockchip: fix otg plug out error before resume"

This reverts commit ccc954ee9f8859569fe16cc17b598fbfece07ae8.
In current code, the dwc3 controller will not process notify when it is
in suspend state and this forbid extcon remove hcd before xhci resume, so
we do not need to forbid remove hcd by the hcd runtime flag and it is
difficult to deal with different process when connected with some special
usb storage.

Change-Id: I987862cceb4ffbe8deefb503f6bc4009770e87bd
Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>