[otlayout] Remove unused HB_OT_LAYOUT_GLYPH_PROPS_UNCLASSIFIED

src/hb-ot-layout-gdef-table.hh

diff --git a/src/hb-ot-layout-gdef-table.hh b/src/hb-ot-layout-gdef-table.hh
index d2fd875..f0e040c 100644
--- a/src/hb-ot-layout-gdef-table.hh
+++ b/src/hb-ot-layout-gdef-table.hh
@@ -383,9 +383,12 @@
   {
     unsigned int klass = get_glyph_class (glyph);
 
+    ASSERT_STATIC ((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH == (unsigned int) LookupFlag::IgnoreBaseGlyphs);
+    ASSERT_STATIC ((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE == (unsigned int) LookupFlag::IgnoreLigatures);
+    ASSERT_STATIC ((unsigned int) HB_OT_LAYOUT_GLYPH_PROPS_MARK == (unsigned int) LookupFlag::IgnoreMarks);
+
     switch (klass) {
-    default:
-    case UnclassifiedGlyph:	return HB_OT_LAYOUT_GLYPH_PROPS_UNCLASSIFIED;
+    default:			return 0;
     case BaseGlyph:		return HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH;
     case LigatureGlyph:		return HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE;
     case ComponentGlyph:	return HB_OT_LAYOUT_GLYPH_PROPS_COMPONENT;

src/hb-ot-layout-private.hh

diff --git a/src/hb-ot-layout-private.hh b/src/hb-ot-layout-private.hh
index 3f02c80..2d7afb0 100644
--- a/src/hb-ot-layout-private.hh
+++ b/src/hb-ot-layout-private.hh
@@ -121,15 +121,13 @@
  */
 
 typedef enum {
-  HB_OT_LAYOUT_GLYPH_PROPS_UNCLASSIFIED	= 1 << HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED,
-  HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH	= 1 << HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH,
-  HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE	= 1 << HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE,
-  HB_OT_LAYOUT_GLYPH_PROPS_MARK		= 1 << HB_OT_LAYOUT_GLYPH_CLASS_MARK,
-  HB_OT_LAYOUT_GLYPH_PROPS_COMPONENT	= 1 << HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT
+  HB_OT_LAYOUT_GLYPH_PROPS_BASE_GLYPH	= 0x02u,
+  HB_OT_LAYOUT_GLYPH_PROPS_LIGATURE	= 0x04u,
+  HB_OT_LAYOUT_GLYPH_PROPS_MARK		= 0x08u,
+  HB_OT_LAYOUT_GLYPH_PROPS_COMPONENT	= 0x10u, /* Unused; can be removed. */
 } hb_ot_layout_glyph_class_mask_t;
 
 
-
 /*
  * GSUB/GPOS
  */