net: remove netx ethernet driver

The ARM netx platform got removed in 5.3, so this driver
is now useless.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

drivers/net/ethernet/Kconfig

@@ -140,17 +140,6 @@ source "drivers/net/ethernet/neterion/Kconfig"
 source "drivers/net/ethernet/netronome/Kconfig"
 source "drivers/net/ethernet/ni/Kconfig"
 source "drivers/net/ethernet/8390/Kconfig"
-
-config NET_NETX
-	tristate "NetX Ethernet support"
-	select MII
-	depends on ARCH_NETX
-	---help---
-	  This is support for the Hilscher netX builtin Ethernet ports
-
-	  To compile this driver as a module, choose M here. The module
-	  will be called netx-eth.
-
 source "drivers/net/ethernet/nvidia/Kconfig"
 source "drivers/net/ethernet/nxp/Kconfig"
 source "drivers/net/ethernet/oki-semi/Kconfig"

drivers/net/ethernet/Makefile

@@ -64,7 +64,6 @@ obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
 obj-$(CONFIG_NET_VENDOR_NETERION) += neterion/
 obj-$(CONFIG_NET_VENDOR_NETRONOME) += netronome/
 obj-$(CONFIG_NET_VENDOR_NI) += ni/
-obj-$(CONFIG_NET_NETX) += netx-eth.o
 obj-$(CONFIG_NET_VENDOR_NVIDIA) += nvidia/
 obj-$(CONFIG_LPC_ENET) += nxp/
 obj-$(CONFIG_NET_VENDOR_OKI) += oki-semi/