Remove unused import (#190)

methane · methane · commit a5c8bafad4ae · 2016-05-05T02:46:10.000+09:00
diff --git a/msgpack/_packer.pyx b/msgpack/_packer.pyx
@@ -2,9 +2,6 @@
 #cython: embedsignature=True
 
 from cpython cimport *
-from libc.stdlib cimport *
-from libc.string cimport *
-from libc.limits cimport *
 
 from msgpack.exceptions import PackValueError, PackOverflowError
 from msgpack import ExtType
