Unused macro and field

* node.h (nd_cnt, struct RNode): nd_cnt has been unused
  since r60239, and also cnt field.
* .gdbinit (nd_cnt): ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63519 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gdbinit

@@ -698,12 +698,6 @@ define nd_cval
   rp ($arg0).u3.value
 end
 
-
-define nd_cnt
-  printf "%su3.cnt%s: ", $color_highlite, $color_end
-  p ($arg0).u3.cnt
-end
-
 define nd_tbl
   printf "%su1.tbl%s: ", $color_highlite, $color_end
   p ($arg0).u1.tbl

node.h

@@ -262,7 +262,6 @@ typedef struct RNode {
 	long state;
 	struct rb_global_entry *entry;
 	struct rb_args_info *args;
-	long cnt;
 	VALUE value;
     } u3;
     rb_code_location_t nd_loc;
@@ -324,7 +323,6 @@ typedef struct RNode {
 #define nd_cval  u3.value
 
 #define nd_oid   u1.id
-#define nd_cnt   u3.cnt
 #define nd_tbl   u1.tbl
 
 #define nd_var   u1.node