--- src/cysignals/pysignals.pyx.orig	2019-03-14 07:39:24.000000000 -0600
+++ src/cysignals/pysignals.pyx	2019-10-25 10:27:20.768572126 -0600
@@ -44,11 +44,6 @@ from cpython.object cimport Py_EQ, Py_NE
 from cpython.exc cimport PyErr_SetFromErrno, PyErr_CheckSignals
 
 
-# Fix https://github.com/cython/cython/pull/2756
-cdef extern from "<signal.h>" nogil:
-    int sigismember(const sigset_t *, int)
-
-
 cdef class SigAction:
     """
     An opaque object representing an OS-level signal handler.