FR: Reset cell/row/column/worksheet to "no formats applied" #347

When dealing with worksheets full of messy or confusing or inconsisent formatting, it would be useful to have something like Calc's "Clear direct formatting", for example in the form of worksheet.clear_direct_formatting(row = nil, col = nil) or whatever might make more sense than that. I'm not sure if something like that is even feasible; hence marked as Feature Request and very happy to get myself educated.