refactor: remove some comments.

source/libs/executor/inc/executorimpl.h

@@ -678,14 +678,11 @@ typedef struct SFillOperatorInfo {
   SExprInfo*        pExprInfo;
   int32_t           numOfExpr;
   SExprSupp         noFillExprSupp;
-//  SExprInfo*        noFillExprInfo;
-//  int32_t           numOfNoFillExpr;
 } SFillOperatorInfo;
 
 typedef struct SGroupbyOperatorInfo {
   SOptrBasicInfo binfo;
   SAggSupporter  aggSup;
-
   SArray*        pGroupCols;     // group by columns, SArray<SColumn>
   SArray*        pGroupColVals;  // current group column values, SArray<SGroupKeys>
   SNode*         pCondition;