Fixed spacing issue on TStringGrid

I believe this was originally added to solve the issue listed below but it doesn't appear to be a problem in the latest IDE and was causing visual issues

https://stackoverflow.com/questions/65552231/delphi-stringgrid-displayed-with-unwanted-column-spacing

Author: lbutler

Diff for: epanet2w/PropEdit.pas

@@ -858,7 +858,6 @@ procedure TPropEdit.GridDrawCell(Sender: TObject; vCol,
 //-----------------------------------------------------------------------------
 begin
   if (FProps = nil) then Exit;
-  Rect.Left := Rect.Left - 4;
   with Sender as TStringGrid do
   begin
     with Canvas do