Cleanup dead method and dependencies

`msgpack_unpacker_peek_next_object_type` was only called by
`Unpacker_peek_next_type`, but that method was _also_ unused and
[previously removed][1].

[1]: d04b10b

Author: skipkayhil

ext/msgpack/unpacker.c

@@ -897,82 +897,6 @@ int msgpack_unpacker_skip(msgpack_unpacker_t* uk, size_t target_stack_depth)
     }
 }
 
-int msgpack_unpacker_peek_next_object_type(msgpack_unpacker_t* uk)
-{
-    int b = get_head_byte(uk);
-    if(b < 0) {
-        return b;
-    }
-
-    SWITCH_RANGE_BEGIN(b)
-    SWITCH_RANGE(b, 0x00, 0x7f)  // Positive Fixnum
-        return TYPE_INTEGER;
-
-    SWITCH_RANGE(b, 0xe0, 0xff)  // Negative Fixnum
-        return TYPE_INTEGER;
-
-    SWITCH_RANGE(b, 0xa0, 0xbf)  // FixRaw
-        return TYPE_RAW;
-
-    SWITCH_RANGE(b, 0x90, 0x9f)  // FixArray
-        return TYPE_ARRAY;
-
-    SWITCH_RANGE(b, 0x80, 0x8f)  // FixMap
-        return TYPE_MAP;
-
-    SWITCH_RANGE(b, 0xc0, 0xdf)  // Variable
-        switch(b) {
-        case 0xc0:  // nil
-            return TYPE_NIL;
-
-        case 0xc2:  // false
-        case 0xc3:  // true
-            return TYPE_BOOLEAN;
-
-        case 0xca:  // float
-        case 0xcb:  // double
-            return TYPE_FLOAT;
-
-        case 0xcc:  // unsigned int  8
-        case 0xcd:  // unsigned int 16
-        case 0xce:  // unsigned int 32
-        case 0xcf:  // unsigned int 64
-            return TYPE_INTEGER;
-
-        case 0xd0:  // signed int  8
-        case 0xd1:  // signed int 16
-        case 0xd2:  // signed int 32
-        case 0xd3:  // signed int 64
-            return TYPE_INTEGER;
-
-        case 0xd9:  // raw 8 / str 8
-        case 0xda:  // raw 16 / str 16
-        case 0xdb:  // raw 32 / str 32
-            return TYPE_RAW;
-
-        case 0xc4:  // bin 8
-        case 0xc5:  // bin 16
-        case 0xc6:  // bin 32
-            return TYPE_RAW;
-
-        case 0xdc:  // array 16
-        case 0xdd:  // array 32
-            return TYPE_ARRAY;
-
-        case 0xde:  // map 16
-        case 0xdf:  // map 32
-            return TYPE_MAP;
-
-        default:
-            return PRIMITIVE_INVALID_BYTE;
-        }
-
-    SWITCH_RANGE_DEFAULT
-        return PRIMITIVE_INVALID_BYTE;
-
-    SWITCH_RANGE_END
-}
-
 int msgpack_unpacker_skip_nil(msgpack_unpacker_t* uk)
 {
     int b = get_head_byte(uk);

ext/msgpack/unpacker.h

@@ -77,16 +77,6 @@ struct msgpack_unpacker_t {
 
 #define UNPACKER_BUFFER_(uk) (&(uk)->buffer)
 
-enum msgpack_unpacker_object_type {
-    TYPE_NIL = 0,
-    TYPE_BOOLEAN,
-    TYPE_INTEGER,
-    TYPE_FLOAT,
-    TYPE_RAW,
-    TYPE_ARRAY,
-    TYPE_MAP,
-};
-
 void msgpack_unpacker_static_init(void);
 
 void msgpack_unpacker_static_destroy(void);
@@ -139,9 +129,6 @@ static inline VALUE msgpack_unpacker_get_last_object(msgpack_unpacker_t* uk)
     return uk->last_object;
 }
 
-
-int msgpack_unpacker_peek_next_object_type(msgpack_unpacker_t* uk);
-
 int msgpack_unpacker_skip_nil(msgpack_unpacker_t* uk);
 
 int msgpack_unpacker_read_array_header(msgpack_unpacker_t* uk, uint32_t* result_size);