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Deletes this conditional format.
Use this method to remove the current top or bottom conditional formatting rule from the worksheet.
void Delete()
Sub Delete()
worksheet.Range["A1:A5"].Value = new object[,] {{10}, {30}, {20}, {50}, {40}};
ITop10 top10 = worksheet.Range["A1:A5"].FormatConditions.AddTop10();
top10.Interior.Color = Color.Yellow;
top10.Rank = 2;
top10.Delete();