ARM: legoev3: disable networking

This disables networking related items in the config. The EV3 does not have
any networking hardware, so this is wasted space.

Signed-off-by: David Lechner <david@lechnology.com>
diff --git a/configs/legoev3_defconfig b/configs/legoev3_defconfig
index c5f54a9..8ee2d22 100644
--- a/configs/legoev3_defconfig
+++ b/configs/legoev3_defconfig
@@ -18,9 +18,7 @@
 CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 # CONFIG_CMD_SETEXPR is not set
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
+# CONFIG_CMD_NET is not set
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_DIAG=y