[kern] Remove accelerator

It wasn't doing anything.

src/hb-ot-face.hh

@@ -67,7 +67,7 @@
     HB_OT_ACCELERATOR(OT, hmtx) \
     HB_OT_ACCELERATOR(OT, vmtx) \
     HB_OT_ACCELERATOR(OT, post) \
-    HB_OT_ACCELERATOR(OT, kern) \
+    HB_OT_TABLE(OT, kern) \
     HB_OT_ACCELERATOR(OT, glyf) \
     HB_OT_TABLE(OT, VORG) \
     HB_OT_ACCELERATOR(OT, name) \

src/hb-ot-kern-table.hh

@@ -503,49 +503,26 @@ struct kern
     }
   }
 
-  struct accelerator_t
-  {
-    inline void init (hb_face_t *face)
-    {
-      blob = hb_sanitize_context_t().reference_table<kern> (face);
-      table = blob->as<kern> ();
-    }
-    inline void fini (void)
-    {
-      hb_blob_destroy (blob);
-    }
-
-    inline bool has_data (void) const
-    { return table->has_data (); }
-
-    inline int get_h_kerning (hb_codepoint_t left, hb_codepoint_t right) const
-    { return table->get_h_kerning (left, right); }
-
-    inline int get_kerning (hb_codepoint_t first, hb_codepoint_t second) const
-    { return get_h_kerning (first, second); }
+  inline int get_kerning (hb_codepoint_t first, hb_codepoint_t second) const
+  { return get_h_kerning (first, second); }
 
-    inline void apply (hb_font_t *font,
-		       hb_buffer_t  *buffer,
-		       hb_mask_t kern_mask) const
-    {
-      /* We only apply horizontal kerning in this table. */
-      if (!HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
-        return;
-
-      hb_kern_machine_t<accelerator_t> machine (*this);
+  inline void apply (hb_font_t *font,
+		     hb_buffer_t  *buffer,
+		     hb_mask_t kern_mask) const
+  {
+    /* We only apply horizontal kerning in this table. */
+    if (!HB_DIRECTION_IS_HORIZONTAL (buffer->props.direction))
+      return;
 
-      if (!buffer->message (font, "start kern table"))
-        return;
+    hb_kern_machine_t<kern> machine (*this);
 
-      machine.kern (font, buffer, kern_mask);
+    if (!buffer->message (font, "start kern table"))
+      return;
 
-      (void) buffer->message (font, "end kern table");
-    }
+    machine.kern (font, buffer, kern_mask);
 
-    private:
-    hb_blob_t *blob;
-    const kern *table;
-  };
+    (void) buffer->message (font, "end kern table");
+  }
 
   protected:
   union {
@@ -558,8 +535,6 @@ struct kern
   DEFINE_SIZE_UNION (4, version32);
 };
 
-struct kern_accelerator_t : kern::accelerator_t {};
-
 } /* namespace OT */
 
 

src/hb-ot-layout.cc

@@ -55,9 +55,9 @@
  **/
 
 
-static const OT::kern::accelerator_t& _get_kern (hb_face_t *face)
+static const OT::kern& _get_kern (hb_face_t *face)
 {
-  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::kern::accelerator_t);
+  if (unlikely (!hb_ot_shaper_face_data_ensure (face))) return Null(OT::kern);
   return *hb_ot_face_data (face)->kern;
 }
 const OT::GDEF& _get_gdef (hb_face_t *face)