It's necessary for this file, as Ruby 2.0.0-p0 has issues with the inline strings used for testing. A sample from one of the eleven test failures when that line is removed:

```
test_append_double(BufferEncodeTest)
/Users/bkerley/Documents/beefcake/test/buffer_encode_test.rb:168:in `test_append_double'
     165:   def test_append_double
     166:     @buf.buf = ""
     167:     @buf.append_float(Math::PI)
  => 168:     assert_equal "\333\017I@", @buf.to_s
     169:   end
     170: 
     171:   def test_append_bool
<"\xDB\u000FI@">(UTF-8) expected but was
<"\xDB\x0FI@">(ASCII-8BIT)
```