Remove unneeded CacheBestSize() from wxMSW wxDateTimePickerCtrl.

The best size is already cached by the base class GetBestSize(), no need to do
it here as well.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78219 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/datetimectrl.cpp

@@ -133,9 +133,7 @@ wxSize wxDateTimePickerCtrl::DoGetBestSize() const
     if ( MSWAllowsNone() )
         x += 3*GetCharWidth();
 
-    wxSize best(x, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
-    CacheBestSize(best);
-    return best;
+    return wxSize(x, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
 }
 
 bool