staging: r8188eu: remove an RT_TRACE print from osdep_service.c

We should use the standard mechanism for debug prints. Remove a print that
uses a driver-specific macro.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210807153636.11712-8-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/os_dep/osdep_service.c

@@ -235,11 +235,9 @@ int rtw_change_ifname(struct adapter *padapter, const char *ifname)
 		ret = register_netdev(pnetdev);
 	else
 		ret = register_netdevice(pnetdev);
-	if (ret != 0) {
-		RT_TRACE(_module_hci_intfs_c_, _drv_err_,
-			 ("register_netdev() failed\n"));
+	if (ret != 0)
 		goto error;
-	}
+
 	rtw_proc_init_one(pnetdev);
 	return 0;
 error: