glr.cc: remove dead code

[Akim Demaille]

commit e78596955db89083ed7673e364fba7ab938a8d82
Author: Akim Demaille <address@hidden>
Date:   Sat Apr 11 14:47:42 2020 +0200

    glr.cc: remove dead code
    
    * data/skeletons/glr.cc: here.

diff --git a/data/skeletons/glr.cc b/data/skeletons/glr.cc
index a6d7471d..9d3b07a5 100644
--- a/data/skeletons/glr.cc
+++ b/data/skeletons/glr.cc
@@ -105,25 +105,9 @@ yyerror (]b4_locations_if([[const 
]b4_namespace_ref::b4_parser_class[::location_
          ]])[]m4_ifset([b4_parse_param], [b4_formals(b4_parse_param),
          ])[const char* msg);]])[
 
-#undef yynerrs
-#undef yychar
-#undef yylval]b4_locations_if([
-#undef yylloc])
-
-m4_if(b4_prefix, [yy], [],
-[[/* Substitute the variable and function names.  */
-#define yyparse ]b4_prefix[parse
-#define yylex   ]b4_prefix[lex
-#define yyerror ]b4_prefix[error
-#define yydebug ]b4_prefix[debug]]b4_pure_if([], [[
-#define yylval  ]b4_prefix[lval
-#define yychar  ]b4_prefix[char
-#define yynerrs ]b4_prefix[nerrs]b4_locations_if([[
-#define yylloc  ]b4_prefix[lloc]])]))
-
 # Hijack the epilogue to define implementations (yyerror, parser member
 # functions etc.).
-m4_append([b4_epilogue],
+]m4_append([b4_epilogue],
 [b4_syncline([@oline@], [@ofile@])dnl
 [
 /*------------------.