Remove useless assert in pgstat_combine_from_qe
If `dispatchResult->okindex` is -1 which means we don't receive any
pgresult from a QE, cdbdisp_getPGresult() will return NULL, so no
need to assert dispatchResult->okindex >= 0.
@@ -4781,8 +4781,6 @@ pgstat_combine_from_qe(CdbDispatchResults *results, int writerSliceIndex)
for (dispatchResult = cdbdisp_resultBegin(results, writerSliceIndex);
dispatchResult < resultEnd; ++dispatchResult)
{
- Assert(dispatchResult->okindex >= 0);
-
pgresult = cdbdisp_getPGresult(dispatchResult, dispatchResult->okindex);
if (pgresult && !dispatchResult->errcode && pgresult->extraslen > 0 &&
pgresult->extraType == PGExtraTypeTableStats)
