ANDROID: GKI: disable rndis USB gadget driver

It's obsolete and only works for unsupported Windows hosts and is
totally insecure and should never be used.  Remove it in order to remove
a potential attack vector on Android systems.

NCM is a much better interface to use and it also works on other
operating system hosts.

Bug: 157965270
Bug: 226303025
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I45acc8b894220cdc9f170f9d5428aca195e9af38