iopsys-econet: Remove not used ebtables flags

As default values of those flags are not set we
can remove then from econet specific config.

Signed-off-by: Marek Puzyniak <marek.puzyniak@iopsys.eu>

iopsys-econet/config/config

@@ -42,8 +42,6 @@ CONFIG_PACKAGE_kmod-i2c-core=y
 CONFIG_PACKAGE_kmod-usb-storage=y
 CONFIG_PACKAGE_i2c-tools=y
 CONFIG_PACKAGE_kmod-ebtables=y
-# CONFIG_PACKAGE_ebtables is not set
-# CONFIG_PACKAGE_ebtables-utils is not set
 CONFIG_PACKAGE_coreutils=y
 CONFIG_PACKAGE_coreutils-stdbuf=y
 CONFIG_WPA_MSG_MIN_PRIORITY=0