net: ena: remove ena_restore_ethtool_params() and relevant fields

BugLink: https://bugs.launchpad.net/bugs/1853180

Deleted unused 4 fields from struct ena_adapter and their only user
ena_restore_ethtool_params().
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 64d1fb9d)
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Khaled Elmously <khalid.elmously@canonical.com>
Acked-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

drivers/net/ethernet/amazon/ena/ena_netdev.c

@@ -1564,14 +1564,6 @@ static void ena_napi_enable_all(struct ena_adapter *adapter)
 		napi_enable(&adapter->ena_napi[i].napi);
 }
 
-static void ena_restore_ethtool_params(struct ena_adapter *adapter)
-{
-	adapter->tx_usecs = 0;
-	adapter->rx_usecs = 0;
-	adapter->tx_frames = 1;
-	adapter->rx_frames = 1;
-}
-
 /* Configure the Rx forwarding */
 static int ena_rss_configure(struct ena_adapter *adapter)
 {
@@ -1621,8 +1613,6 @@ static int ena_up_complete(struct ena_adapter *adapter)
 	/* enable transmits */
 	netif_tx_start_all_queues(adapter->netdev);
 
-	ena_restore_ethtool_params(adapter);
-
 	ena_napi_enable_all(adapter);
 
 	/* Enable completion queues interrupt */

drivers/net/ethernet/amazon/ena/ena_netdev.h

@@ -328,9 +328,6 @@ struct ena_adapter {
 
 	u32 missing_tx_completion_threshold;
 
-	u32 tx_usecs, rx_usecs; /* interrupt moderation */
-	u32 tx_frames, rx_frames; /* interrupt moderation */
-
 	u32 requested_tx_ring_size;
 	u32 requested_rx_ring_size;