Remove useless import

spacy/vocab.pyx

@@ -1,23 +1,17 @@
 from __future__ import unicode_literals
 
-from libc.stdio cimport fopen, fclose, fread, fwrite, FILE
 from libc.string cimport memset
 from libc.stdint cimport int32_t
-from libc.stdint cimport uint64_t
 from libc.math cimport sqrt
 
 from pathlib import Path
 import bz2
-import io
-import math
 import ujson as json
-import tempfile
 import re
 
 from .lexeme cimport EMPTY_LEXEME
 from .lexeme cimport Lexeme
 from .strings cimport hash_string
-from .orth cimport word_shape
 from .typedefs cimport attr_t
 from .cfile cimport CFile
 from .lemmatizer import Lemmatizer
@@ -30,7 +24,6 @@ from . import symbols
 from cymem.cymem cimport Address
 from .serialize.packer cimport Packer
 from .attrs cimport PROB, LANG
-from . import deprecated
 from . import util