Remove LP_swap_remember persistentPrivKey field.

iguana/exchanges/LP_include.h

@@ -270,7 +270,7 @@ char *txnames[] = { "alicespend", "bobspend", "bobpayment", "alicepayment", "bob
 
 struct LP_swap_remember
 {
-    bits256 persistentPrivKey,pubA0,pubB0,pubB1,privAm,privBn,paymentspent,Apaymentspent,depositspent,myprivs[2],txids[sizeof(txnames)/sizeof(*txnames)];
+    bits256 pubA0,pubB0,pubB1,privAm,privBn,paymentspent,Apaymentspent,depositspent,myprivs[2],txids[sizeof(txnames)/sizeof(*txnames)];
     uint64_t Atxfee,Btxfee,srcamount,destamount,aliceid;
     int64_t values[sizeof(txnames)/sizeof(*txnames)];
     uint32_t finishtime,tradeid,requestid,quoteid,plocktime,dlocktime,expiration,state,otherstate;