net: dsa: tag_sja1105: stop resetting network and transport headers

This makes no sense and is not needed, it is probably a debugging
leftover.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dsa/tag_sja1105.c

@@ -307,8 +307,6 @@ static struct sk_buff *sja1105_rcv(struct sk_buff *skb,
 			__skb_vlan_pop(skb, &tci);
 		}
 		skb_pull_rcsum(skb, ETH_HLEN);
-		skb_reset_network_header(skb);
-		skb_reset_transport_header(skb);
 
 		vid = tci & VLAN_VID_MASK;
 		source_port = dsa_8021q_rx_source_port(vid);