Revert special-casing tiled rendering here

It seems to do more harm than good. Using the default avoids some yet
not found bug in vcl (or somewhere) and fixes the rendering of some
complex SmartArt test documents. (As long as the use of delayed
rendering for "graphics" in svx is also disabled.)

Change-Id: I0ed4b25278101bdd995ce90e8fb65f65ca644ebe

unotools/source/config/fltrcfg.cxx

@@ -584,24 +584,8 @@ void SvtFilterOptions::SetImpress2PowerPoint( bool bFlag )
     SetModified();
 }
 
-static bool lcl_DoTiledRendering()
-{
-#if !HAVE_FEATURE_DESKTOP
-    // We do tiled rendering only for iOS at the moment, actually, but
-    // let's see what happens if we assume it for Android, too.
-    return true;
-#else
-    // We need some way to know globally if this process will use
-    // tiled rendering or not. Or should this be a per-window setting?
-    // Or what?
-    return false;
-#endif
-}
-
 bool SvtFilterOptions::IsSmartArt2Shape() const
 {
-    if (lcl_DoTiledRendering())
-        return true;
     return pImp->IsFlag( FILTERCFG_SMARTART_SHAPE_LOAD );
 }