redhat/configs: delete renamed CONFIG_MLX5_EN_MACSEC
CONFIG_MLX5_EN_MACSEC was renamed to CONFIG_MLX5_MACSEC in commit 7390762a ("net/mlx5e: Move MACsec flow steering operations to be used as core library"). Remove the old name from redhat/configs. The feature is already correctly enabled under the new name.
Signed-off-by: Michal Schmidt mschmidt@redhat.com