remove unused cimport of is_null_datetimelike (pandas-dev#17598)

jbrockmendel · jreback · commit c5c3642e49f6 · 2017-09-20T08:04:29.000-04:00
diff --git a/pandas/_libs/algos.pyx b/pandas/_libs/algos.pyx
@@ -33,7 +33,6 @@ from libc.math cimport sqrt, fabs
 from util cimport numeric, get_nat
 
 cimport lib
-from lib cimport is_null_datetimelike
 from pandas._libs import lib
 
 cdef int64_t iNaT = get_nat()
