usb: don't clear FEAT_C_ENABLE on usb_port_runtime_resume failure

Three reasons:
1/ It's an invalid operation on usb3 ports
2/ There's no guarantee of when / if a usb2 port has entered an error
   state relative to PORT_POWER request
3/ The port is active / powered at this point, so khubd will clear it as
   a matter of course
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/core/port.c

@@ -110,7 +110,6 @@ static int usb_port_runtime_resume(struct device *dev)
 		if (retval < 0)
 			dev_dbg(&port_dev->dev, "can't get reconnection after setting port  power on, status %d\n",
 					retval);
-		usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE);
 		retval = 0;
 	}