SqlExtract: Remove commented code

Author: alex-kulakov

Orm/Xtensive.Orm/Sql/Dml/Expressions/SqlExtract.cs

@@ -65,21 +65,13 @@ public override void ReplaceWith(SqlExpression expression)
       internalValue = replacingExpression.internalValue;
       typeMarker = replacingExpression.typeMarker;
       typeHasTime = replacingExpression.typeHasTime;
-      //DateTimePart = replacingExpression.DateTimePart;
-      //DateTimeOffsetPart = replacingExpression.DateTimeOffsetPart;
-      //IntervalPart = replacingExpression.IntervalPart;
       Operand = replacingExpression.Operand;
     }
 
     internal override object Clone(SqlNodeCloneContext context) =>
       context.NodeMapping.TryGetValue(this, out var clone)
         ? clone
         : context.NodeMapping[this] = new SqlExtract(internalValue, typeMarker, (SqlExpression)Operand.Clone(context));
-          //DateTimePart!=SqlDateTimePart.Nothing
-          //? new SqlExtract(DateTimePart, (SqlExpression) Operand.Clone(context))
-          //: IntervalPart!=SqlIntervalPart.Nothing
-          //  ? new SqlExtract(IntervalPart, (SqlExpression) Operand.Clone(context))
-          //  : new SqlExtract(DateTimeOffsetPart, (SqlExpression) Operand.Clone(context));
 
     public override void AcceptVisitor(ISqlVisitor visitor)
     {
@@ -94,10 +86,6 @@ internal SqlExtract(SqlDateTimePart dateTimePart, SqlExpression operand)
       internalValue = dateTimePart.ToDtoPartFast();
       typeMarker = DateTimeTypeId;
       typeHasTime = true;
-
-      //DateTimePart = dateTimePart;
-      //DateTimeOffsetPart = SqlDateTimeOffsetPart.Nothing;
-      //IntervalPart = SqlIntervalPart.Nothing;
       Operand = operand;
     }
 
@@ -107,10 +95,6 @@ internal SqlExtract(SqlIntervalPart intervalPart, SqlExpression operand)
       internalValue = intervalPart.ToDtoPartFast();
       typeMarker = IntervalTypeId;
       typeHasTime = true;
-
-      //DateTimePart = SqlDateTimePart.Nothing;
-      //DateTimeOffsetPart = SqlDateTimeOffsetPart.Nothing;
-      //IntervalPart = intervalPart;
       Operand = operand;
     }