Remove old usb hack

Don't re-configure u2f endpoints every time the host sends a GetDescriptor

(cherry picked from commit c49427f)

lib_stusb_impl/usbd_impl.c

@@ -933,15 +933,6 @@ uint8_t *USBD_HID_GetReportDescriptor_impl(uint16_t *len)
  switch (USBD_Device.request.wIndex & 0xFF) {
 #ifdef HAVE_IO_U2F
  case U2F_INTF:
-
- // very dirty work due to lack of callback when USB_HID_Init is called
- USBD_LL_OpenEP(&USBD_Device, U2F_EPIN_ADDR, USBD_EP_TYPE_INTR, U2F_EPIN_SIZE);
-
- USBD_LL_OpenEP(&USBD_Device, U2F_EPOUT_ADDR, USBD_EP_TYPE_INTR, U2F_EPOUT_SIZE);
-
- /* Prepare Out endpoint to receive 1st packet */
- USBD_LL_PrepareReceive(&USBD_Device, U2F_EPOUT_ADDR, U2F_EPOUT_SIZE);
-
  *len = sizeof(HID_ReportDesc_fido);
  return (uint8_t *) HID_ReportDesc_fido;
 #endif // HAVE_IO_U2F