Remove redundant 'inline' from methods (#1483)

diff --git a/src/hb-ot-shape-complex-khmer.cc b/src/hb-ot-shape-complex-khmer.cc
index 8b6ec51..4475ceb 100644
--- a/src/hb-ot-shape-complex-khmer.cc
+++ b/src/hb-ot-shape-complex-khmer.cc
@@ -151,7 +151,7 @@
 
 struct would_substitute_feature_t
 {
-  inline void init (const hb_ot_map_t *map, hb_tag_t feature_tag, bool zero_context_)
+  void init (const hb_ot_map_t *map, hb_tag_t feature_tag, bool zero_context_)
   {
     zero_context = zero_context_;
     map->get_stage_lookups (0/*GSUB*/,
@@ -159,9 +159,9 @@
 			    &lookups, &count);
   }
 
-  inline bool would_substitute (const hb_codepoint_t *glyphs,
-				unsigned int          glyphs_count,
-				hb_face_t            *face) const
+  bool would_substitute (const hb_codepoint_t *glyphs,
+			 unsigned int          glyphs_count,
+			 hb_face_t            *face) const
   {
     for (unsigned int i = 0; i < count; i++)
       if (hb_ot_layout_lookup_would_substitute_fast (face, lookups[i].index, glyphs, glyphs_count, zero_context))
@@ -177,7 +177,7 @@
 
 struct khmer_shape_plan_t
 {
-  inline bool get_virama_glyph (hb_font_t *font, hb_codepoint_t *pglyph) const
+  bool get_virama_glyph (hb_font_t *font, hb_codepoint_t *pglyph) const
   {
     hb_codepoint_t glyph = virama_glyph;
     if (unlikely (virama_glyph == (hb_codepoint_t) -1))