Remove old cruft

src/hb-shaper-list.hh

diff --git a/src/hb-shaper-list.hh b/src/hb-shaper-list.hh
index da6d8e0..57fb8ec 100644
--- a/src/hb-shaper-list.hh
+++ b/src/hb-shaper-list.hh
@@ -39,12 +39,6 @@
 HB_SHAPER_IMPLEMENT (ot) /* <--- This is our main OpenType shaper. */
 #endif
 
-#ifdef HAVE_HB_OLD
-HB_SHAPER_IMPLEMENT (old)
-#endif
-#ifdef HAVE_ICU_LE
-HB_SHAPER_IMPLEMENT (icu_le)
-#endif
 #ifdef HAVE_UNISCRIBE
 HB_SHAPER_IMPLEMENT (uniscribe)
 #endif