Remove outdated JRUBY ifdefs

This is no longer used since now there's a Java version
of the gem.

Author: byroot

ext/msgpack/packer.h

@@ -453,11 +453,7 @@ static inline void msgpack_packer_write_symbol_value(msgpack_packer_t* pk, VALUE
 
 static inline void msgpack_packer_write_fixnum_value(msgpack_packer_t* pk, VALUE v)
 {
-#ifdef JRUBY
-    msgpack_packer_write_long(pk, FIXNUM_P(v) ? FIX2LONG(v) : rb_num2ll(v));
-#else
     msgpack_packer_write_long(pk, FIX2LONG(v));
-#endif
 }
 
 static inline void msgpack_packer_write_bignum_value(msgpack_packer_t* pk, VALUE v)

ext/msgpack/unpacker_class.c

@@ -284,12 +284,6 @@ static VALUE Unpacker_each_impl(VALUE self)
             raise_unpacker_error(uk, r);
         }
         VALUE v = msgpack_unpacker_get_last_object(uk);
-#ifdef JRUBY
-        /* TODO JRuby's rb_yield behaves differently from Ruby 1.9.3 or Rubinius. */
-        if(rb_type(v) == T_ARRAY) {
-            v = rb_ary_new3(1, v);
-        }
-#endif
         rb_yield(v);
     }
 }