[pango] Drop unused _pango_ft2_ft_strerror

[Khaled Hosny <khaledh src gnome org>]

commit d1dc7bcbd6b980cf072cba712b00117b337da3e8
Author: Khaled Hosny <khaledhosny eglug org>
Date:   Fri Dec 1 20:40:43 2017 +0200

    Drop unused _pango_ft2_ft_strerror
    
    This function is unused since 2004! Last use was dropped in commit
    2cdd74591a2b885dbc31292d20dabba81d42faf0. Currently it is just causing
    compiler warnings:
    
    [40/111] Compiling C object 'pango/pangoft2-1.0@sha/pangoft2.c.o'.
    /usr/include/freetype2/freetype/fterrdef.h: In function ‘_pango_ft2_ft_strerror’:
    /usr/include/freetype2/freetype/fterrdef.h:235:17: warning: initializer-string for array of chars is too 
long
                     "found FDEF or IDEF opcode in glyf bytecode" )
                     ^
    ../pango/pangoft2.c:537:38: note: in definition of macro ‘FT_ERRORDEF’
     #define FT_ERRORDEF( e, v, s )  { e, s },
                                          ^
    /usr/include/freetype2/freetype/fterrdef.h:234:3: note: in expansion of macro ‘FT_ERRORDEF_’
       FT_ERRORDEF_( DEF_In_Glyf_Bytecode,                        0x9C,
       ^~~~~~~~~~~~
    /usr/include/freetype2/freetype/fterrdef.h:235:17: note: (near initialization for ‘ft_errors[75].msg’)
                     "found FDEF or IDEF opcode in glyf bytecode" )
                     ^
    ../pango/pangoft2.c:537:38: note: in definition of macro ‘FT_ERRORDEF’
     #define FT_ERRORDEF( e, v, s )  { e, s },
                                          ^
    /usr/include/freetype2/freetype/fterrdef.h:234:3: note: in expansion of macro ‘FT_ERRORDEF_’
       FT_ERRORDEF_( DEF_In_Glyf_Bytecode,                        0x9C,
       ^~~~~~~~~~~~

 pango/pangoft2-private.h |    1 -
 pango/pangoft2.c         |   45 ---------------------------------------------
 2 files changed, 0 insertions(+), 46 deletions(-)
---
diff --git a/pango/pangoft2-private.h b/pango/pangoft2-private.h
index 02d0a34..7a81d40 100644
--- a/pango/pangoft2-private.h
+++ b/pango/pangoft2-private.h
@@ -83,7 +83,6 @@ GType pango_ft2_font_get_type (void) G_GNUC_CONST;
 PangoFT2Font * _pango_ft2_font_new                (PangoFT2FontMap   *ft2fontmap,
                                                   FcPattern         *pattern);
 FT_Library     _pango_ft2_font_map_get_library    (PangoFontMap      *fontmap);
-const char    *_pango_ft2_ft_strerror             (FT_Error           error);
 void _pango_ft2_font_map_default_substitute (PangoFcFontMap *fcfontmap,
                                             FcPattern      *pattern);
 
diff --git a/pango/pangoft2.c b/pango/pangoft2.c
index 9372d53..0671a11 100644
--- a/pango/pangoft2.c
+++ b/pango/pangoft2.c
@@ -517,51 +517,6 @@ pango_ft2_get_unknown_glyph (PangoFont *font)
     return PANGO_GLYPH_EMPTY;
 }
 
-typedef struct
-{
-  FT_Error     code;
-  const char   msg[40];
-} ft_error_description;
-
-static int
-ft_error_compare (const void *pkey,
-                 const void *pbase)
-{
-  return ((ft_error_description *) pkey)->code - ((ft_error_description *) pbase)->code;
-}
-
-const char *
-_pango_ft2_ft_strerror (FT_Error error)
-{
-#undef __FTERRORS_H__
-#define FT_ERRORDEF( e, v, s )  { e, s },
-#define FT_ERROR_START_LIST  {
-#define FT_ERROR_END_LIST    };
-
-  static const ft_error_description ft_errors[] =
-#include FT_ERRORS_H
-
-#undef FT_ERRORDEF
-#undef FT_ERROR_START_LIST
-#undef FT_ERROR_END_LIST
-
-  ft_error_description *found =
-    bsearch (&error, ft_errors, G_N_ELEMENTS (ft_errors),
-            sizeof (ft_errors[0]), ft_error_compare);
-  if (found != NULL)
-    return found->msg;
-  else
-    {
-      static char *default_msg = NULL; /* MT-safe */
-
-      if (g_once_init_enter (&default_msg))
-       g_once_init_leave (&default_msg, g_malloc (60));
-
-      g_sprintf (default_msg, "Unknown FreeType2 error %#x", error);
-      return default_msg;
-    }
-}
-
 void *
 _pango_ft2_font_get_cache_glyph_data (PangoFont *font,
                                     int        glyph_index)