staging: fsl-dpaa2/eth: Remove unused field

Remove dpio_id field in struct dpaa2_eth_channel, which wasn't
used anywhere in the code.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h

@@ -285,7 +285,6 @@ struct dpaa2_eth_channel {
 	struct fsl_mc_device *dpcon;
 	int dpcon_id;
 	int ch_id;
-	int dpio_id;
 	struct napi_struct napi;
 	struct dpaa2_io *dpio;
 	struct dpaa2_io_store *store;