Avoid one iOS ifdef

Did not seem to harm, but did not seem to do any good either, and the
less ifdefs the better. I think. Gawd this crack is ad-hoc.

Change-Id: Iaec8d2015e95ac46c787b4b2701d3e29684f1710

vcl/quartz/salgdicommon.cxx

@@ -1685,11 +1685,6 @@ bool AquaSalGraphics::supportsOperation( OutDevSupportType eType ) const
 
 bool AquaSalGraphics::setClipRegion( const Region& i_rClip )
 {
-#ifdef IOS
-    if (mbForeignContext)
-        return true;
-#endif
-
     // release old clip path
     if( mxClipPath )
     {