protob: remove chain_id from get address and get public key

protob/messages-ethereum.proto

@@ -17,7 +17,6 @@ import "messages-common.proto";
 message EthereumGetPublicKey {
     repeated uint32 address_n = 1;                                      // BIP-32 path to derive the key from master node
     optional bool show_display = 2;                                     // optionally show on display before sending the result
-    optional uint32 chain_id = 3;                                       // eth chain
 }
 
 /**
@@ -38,7 +37,6 @@ message EthereumPublicKey {
 message EthereumGetAddress {
     repeated uint32 address_n = 1;  // BIP-32 path to derive the key from master node
     optional bool show_display = 2; // optionally show on display before sending the result
-    optional uint32 chain_id = 3;   // Chain Id for EIP 155
 }
 
 /**