README: remove RNDIS from suggested drivers for USB gadget

RNDIS has a long story of issues and attempts to be dropped entirely.
https://www.phoronix.com/news/Linux-RNDIS-Removal-EOY2024

AFAIUI, it is not necessary for modern Windows anymore.

Signed-off-by: Daniel Maslowski <[email protected]>

Author: orangecms

README.md

@@ -185,7 +185,6 @@ there](https://linuxlink.timesys.com/docs/wiki/engineering/HOWTO_Use_USB_Gadget_
 - enable the Linux kernel options
   * `CONFIG_USB_GADGET`
   * `CONFIG_USB_ETH`
-  * `CONFIG_USB_ETH_RNDIS` (for Windows support)
   * `CONFIG_INET`
 - add the MAC addresses for your gadget device and the machine you connect to in
   the kernel `CMDLINE`, e.g., `g_ether.dev_addr=12:34:56:78:9a:bc g_ether.host_addr=12:34:56:78:9a:bd`