Re: glr2.cc: get rid of the yyerror scaffolding

This should have been part of the previous commit.

commit 1df4b746da8d35e5e1ec2edbd707ca755f91d42d
Author: Akim Demaille <[email protected]>
Date:   Sat Sep 5 07:47:21 2020 +0200

    glr2.cc: style changes
    
    * data/skeletons/glr2.cc: Remove stray comment.

diff --git a/data/skeletons/glr2.cc b/data/skeletons/glr2.cc
index b69a74bb..987ac2e4 100644
--- a/data/skeletons/glr2.cc
+++ b/data/skeletons/glr2.cc
@@ -782,7 +782,7 @@ static void yypdumpstack (struct yyGLRStack* yystackp)
 #define YYHEADROOM 2
 
 #ifndef YYSTACKEXPANDABLE
-#  define YYSTACKEXPANDABLE 1
+# define YYSTACKEXPANDABLE 1
 #endif
 
 /** State numbers, as in LALR(1) machine */
@@ -3020,11 +3020,6 @@ m4_if(b4_prefix, [yy], [],
 #define yylloc  ]b4_prefix[lloc]])])[
 
 
-/*------------------.
-| Report an error.  |
-`------------------*/
-
-
 ]b4_namespace_open[
 ]dnl In this section, the parse params are the original parse_params.
 m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl