Remove a couple of unused consts
diff --git a/src/hb-ot-hhea-table.hh b/src/hb-ot-hhea-table.hh
index c8e9536..a4f0acf 100644
--- a/src/hb-ot-hhea-table.hh
+++ b/src/hb-ot-hhea-table.hh
@@ -44,11 +44,6 @@
 
 struct _hea
 {
-  static const hb_tag_t tableTag = HB_TAG('_','h','e','a');
-
-  static const hb_tag_t hheaTag	= HB_OT_TAG_hhea;
-  static const hb_tag_t vheaTag	= HB_OT_TAG_vhea;
-
   inline bool sanitize (hb_sanitize_context_t *c) const
   {
     TRACE_SANITIZE (this);
diff --git a/src/hb-ot-layout-gsubgpos-private.hh b/src/hb-ot-layout-gsubgpos-private.hh
index dcaa261..bf0cd01 100644
--- a/src/hb-ot-layout-gsubgpos-private.hh
+++ b/src/hb-ot-layout-gsubgpos-private.hh
@@ -2285,9 +2285,6 @@
 
 struct GSUBGPOS
 {
-  static const hb_tag_t GSUBTag	= HB_OT_TAG_GSUB;
-  static const hb_tag_t GPOSTag	= HB_OT_TAG_GPOS;
-
   inline unsigned int get_script_count (void) const
   { return (this+scriptList).len; }
   inline const Tag& get_script_tag (unsigned int i) const
diff --git a/src/main.cc b/src/main.cc
index 377d139..819100e 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -106,8 +106,8 @@
 
       switch (table.tag) {
 
-      case GSUBGPOS::GSUBTag:
-      case GSUBGPOS::GPOSTag:
+      case HB_OT_TAG_GSUB:
+      case HB_OT_TAG_GPOS:
 	{
 
 	const GSUBGPOS &g = *CastP<GSUBGPOS> (font_data + table.offset);