rpc: remove useless type cast
rpc: remove useless type cast

cuongdo/cockroach,bg451/cockroach,paperstreet/cockroach,cockroachdb/cockroach,glycerine/cockroach,veteranlu/cockroach,petermattis/cockroach,maxlang/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,arjun4084346/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,sunya123/cockroach,petermattis/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,bg451/cockroach,bg451/cockroach,bg451/cockroach,bg451/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,nieyy/cockroach,glycerine/cockroach,glycerine/cockroach,maxlang/cockroach,vivekmenezes/cockroach,petermattis/cockroach,vaibhavarora/cockroach,maxlang/cockroach,glycerine/cockroach,nieyy/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,cockroachdb/cockroach,petermattis/cockroach,vaibhavarora/cockroach,sunya123/cockroach,glycerine/cockroach,sunya123/cockroach,glycerine/cockroach,paperstreet/cockroach,arjun4084346/cockroach,nieyy/cockroach,petermattis/cockroach,sunya123/cockroach,arjun4084346/cockroach,cuongdo/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,petermattis/cockroach,vivekmenezes/cockroach,glycerine/cockroach,vivekmenezes/cockroach,sunya123/cockroach,maxlang/cockroach,veteranlu/cockroach,paperstreet/cockroach,arjun4084346/cockroach,veteranlu/cockroach,glycerine/cockroach,paperstreet/cockroach,maxlang/cockroach,sunya123/cockroach,sunya123/cockroach,vivekmenezes/cockroach,maxlang/cockroach,petermattis/cockroach,vivekmenezes/cockroach,cuongdo/cockroach,paperstreet/cockroach,cockroachdb/cockroach,cuongdo/cockroach,nieyy/cockroach,bg451/cockroach,cockroachdb/cockroach,sunya123/cockroach,cuongdo/cockroach,veteranlu/cockroach,petermattis/cockroach,vaibhavarora/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,cuongdo/cockroach,paperstreet/cockroach,nieyy/cockroach,veteranlu/cockroach,veteranlu/cockroach,arjun4084346/cockroach,nieyy/cockroach,nieyy/cockroach,bg451/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,cuongdo/cockroach,nieyy/cockroach,maxlang/cockroach,maxlang/cockroach,cockroachdb/cockroach,vivekmenezes/cockroach