Revert "Fix Compile Warnings (#5963)"

This reverts commit b83e16dbdd.

Found regressions like auto orientation didn't work anymore after this change, revert it

src/slic3r/GUI/OG_CustomCtrl.cpp

@@ -405,6 +405,7 @@ void OG_CustomCtrl::OnMotion(wxMouseEvent& event)
     // Set tooltips with information for each icon
     // BBS: markdown tip
     if (!markdowntip.empty()) {
+        wxWindow* window = GetGrandParent();
         assert(focusedLine);
         wxPoint pos2 = { 250, focusedLine->rect_label.y };
         pos2 = ClientToScreen(pos2);