[flexcomponents] Remove the row selection from the datagrid

[arpan srivastava]

Hi All,
      I don't want the datagrid selection i.e. whenever you click on a row it 
gets selected. for this I overrided the drawSelectionInidicator() and left it 
empty. Now if I click on any row it is not selected but when I  change the font 
color/font size of the text in the by setStyle() then the text in the row that 
I clicked turns black. I think this is a default behavior but does anyone know 
how to override it.