No need to assign uid after ef_blank()

The redundant assignments should have been removed in commit 2da8d0c7.

src/lib/commands/offe.c

@@ -229,7 +229,6 @@ do_loan(void)
     loan.l_amtdue = amt;
     (void)time(&loan.l_lastpay);
     loan.l_duedate = loan.l_ldur * SECS_PER_DAY + loan.l_lastpay;
-    loan.l_uid = nstr.cur;
     if (!putloan(nstr.cur, &loan)) {
 	pr("Couldn't save loan; get help!\n");
 	return RET_SYS;

src/lib/commands/sell.c

@@ -155,7 +155,6 @@ sell(void)
 	comm.com_y = 0;
 	comm.sell_x = sect.sct_x;
 	comm.sell_y = sect.sct_y;
-	comm.com_uid = ii;
 	if (!putcomm(ii, &comm)) {
 	    pr("Problems with the commodities file, call the Deity\n");
 	    return RET_FAIL;

src/lib/commands/set.c

@@ -128,7 +128,6 @@ set(void)
 	    trade.trd_y = item.gen.y;
 	    trade.trd_type = type;
 	    trade.trd_owner = player->cnum;
-	    trade.trd_uid = id;
 	    trade.trd_unitid = ni.cur;
 	    trade.trd_price = price;
 	    (void)time(&now);