Remove showlines from tree view for better Win10+ look

Author: damieng

Source/Main.lfm

@@ -40,11 +40,12 @@ object frmMain: TfrmMain
       ReadOnly = True
       RowSelect = True
       ScrollBars = ssAutoVertical
+      ShowLines = False
       ShowRoot = False
       TabOrder = 1
       OnChange = tvwMainChange
       OnDblClick = tvwMainDblClick
-      Options = [tvoAutoItemHeight, tvoKeepCollapsedNodes, tvoReadOnly, tvoRowSelect, tvoShowButtons, tvoShowLines, tvoToolTips, tvoThemedDraw]
+      Options = [tvoAutoItemHeight, tvoKeepCollapsedNodes, tvoReadOnly, tvoRowSelect, tvoShowButtons, tvoToolTips, tvoThemedDraw]
     end
     object pnlTreeLabel: TPanel
       Left = 0