net: stmmac: dwxgmac2: remove useless NULL pointer initialisations

Remove useless NULL pointer initialisations for "PCS" methods from the
dwxgmac2 code.
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/E1sCErP-00EOPl-IT@rmk-PC.armlinux.org.ukSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c

@@ -1554,9 +1554,6 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.reset_eee_mode = dwxgmac2_reset_eee_mode,
 	.set_eee_timer = dwxgmac2_set_eee_timer,
 	.set_eee_pls = dwxgmac2_set_eee_pls,
-	.pcs_ctrl_ane = NULL,
-	.pcs_rane = NULL,
-	.pcs_get_adv_lp = NULL,
 	.debug = NULL,
 	.set_filter = dwxgmac2_set_filter,
 	.safety_feat_config = dwxgmac3_safety_feat_config,
@@ -1614,9 +1611,6 @@ const struct stmmac_ops dwxlgmac2_ops = {
 	.reset_eee_mode = dwxgmac2_reset_eee_mode,
 	.set_eee_timer = dwxgmac2_set_eee_timer,
 	.set_eee_pls = dwxgmac2_set_eee_pls,
-	.pcs_ctrl_ane = NULL,
-	.pcs_rane = NULL,
-	.pcs_get_adv_lp = NULL,
 	.debug = NULL,
 	.set_filter = dwxgmac2_set_filter,
 	.safety_feat_config = dwxgmac3_safety_feat_config,