remove TT_REGEX and TT_MATCH

src/etc.c

@@ -173,7 +173,6 @@ mrb_obj_id(mrb_value obj)
   case  MRB_TT_RANGE:
   case  MRB_TT_STRUCT:
   case  MRB_TT_EXCEPTION:
-  case  MRB_TT_MATCH:
   case  MRB_TT_FILE:
   case  MRB_TT_DATA:
   default:

src/object.c

@@ -379,12 +379,10 @@ static const struct types {
   {MRB_TT_HASH,   "Hash"},
   {MRB_TT_STRING, "String"},
   {MRB_TT_RANGE,  "Range"},
-  {MRB_TT_REGEX,  "Regexp"},
   {MRB_TT_STRUCT, "Struct"},
 //    {MRB_TT_BIGNUM,  "Bignum"},
   {MRB_TT_FILE,   "File"},
   {MRB_TT_DATA,   "Data"},  /* internal use: wrapped C pointers */
-  {MRB_TT_MATCH,  "MatchData"},  /* data of $~ */
 //    {MRB_TT_VARMAP,  "Varmap"},  /* internal use: dynamic variables */
 //    {MRB_TT_NODE,  "Node"},  /* internal use: syntax tree node */
 //    {MRB_TT_UNDEF,  "undef"},  /* internal use: #undef; should not happen */