Remove unnecessary type `mrb_hash_value`
The type `mrb_hash_value` is no longer used by the segmented list
implementation (ref and e65d426).
MODIFY
include/mruby/hash.h
include/mruby/hash.h
@@ -197,13 +197,6 @@ MRB_API mrb_value mrb_hash_dup(mrb_state *mrb, mrb_value hash);
*/
MRB_API void mrb_hash_merge(mrb_state *mrb, mrb_value hash1, mrb_value hash2);
-/* declaration of struct mrb_hash_value */
-/* be careful when you touch the internal */
-typedef struct {
- mrb_value v;
- mrb_int n;
-} mrb_hash_value;
-
/* RHASH_TBL allocates st_table if not available. */
#define RHASH(obj) ((struct RHash*)(mrb_ptr(obj)))
#define RHASH_TBL(h) (RHASH(h)->ht)

Remove unnecessary type `mrb_hash_value`

The type `mrb_hash_value` is no longer used by the segmented list
implementation (ref e8dcfe1 and e65d426).