9 files changed, 6 insertions, 13 deletions
diff --git a/numpy/core/getlimits.py b/numpy/core/getlimits.py
index 0f7031bac..c96e6d5e7 100644
--- a/numpy/core/getlimits.py
+++ b/numpy/core/getlimits.py
@@ -11,7 +11,6 @@ from . import numeric
 from . import numerictypes as ntypes
 from .numeric import array, inf, NaN
 from .umath import log10, exp2, nextafter, isnan
-from . import umath
 
 
 def _fr0(a):
diff --git a/numpy/core/numerictypes.py b/numpy/core/numerictypes.py
index 12f424fd4..8e5de852b 100644
--- a/numpy/core/numerictypes.py
+++ b/numpy/core/numerictypes.py
@@ -80,12 +80,10 @@ Exported symbols include:
 
 """
 import numbers
-import warnings
 
 from numpy.core.multiarray import (
-        typeinfo, ndarray, array, empty, dtype, datetime_data,
-        datetime_as_string, busday_offset, busday_count, is_busday,
-        busdaycalendar
+        ndarray, array, dtype, datetime_data, datetime_as_string,
+        busday_offset, busday_count, is_busday, busdaycalendar
         )
 from numpy.core.overrides import set_module
 
diff --git a/numpy/core/overrides.py b/numpy/core/overrides.py
index e1fdd06f2..840cf38c9 100644
--- a/numpy/core/overrides.py
+++ b/numpy/core/overrides.py
@@ -2,7 +2,6 @@
 import collections
 import functools
 import os
-import textwrap
 
 from numpy.core._multiarray_umath import (
     add_docstring, implement_array_function, _get_implementing_args)
diff --git a/numpy/core/tests/test_casting_unittests.py b/numpy/core/tests/test_casting_unittests.py
index b0d8ff503..cb4792090 100644
--- a/numpy/core/tests/test_casting_unittests.py
+++ b/numpy/core/tests/test_casting_unittests.py
@@ -9,7 +9,6 @@ than integration tests.
 import pytest
 import textwrap
 import enum
-import itertools
 import random
 
 import numpy as np
diff --git a/numpy/core/tests/test_dtype.py b/numpy/core/tests/test_dtype.py
index 1c25bee00..6eab4c966 100644
--- a/numpy/core/tests/test_dtype.py
+++ b/numpy/core/tests/test_dtype.py
@@ -3,7 +3,6 @@ import operator
 import pytest
 import ctypes
 import gc
-import warnings
 import types
 from typing import Any
 
diff --git a/numpy/core/tests/test_numeric.py b/numpy/core/tests/test_numeric.py
index e36f76c53..558ded01b 100644
--- a/numpy/core/tests/test_numeric.py
+++ b/numpy/core/tests/test_numeric.py
@@ -16,7 +16,7 @@ from numpy.testing import (
     )
 from numpy.core._rational_tests import rational
 
-from hypothesis import assume, given, strategies as st
+from hypothesis import given, strategies as st
 from hypothesis.extra import numpy as hynp
 
 
diff --git a/numpy/core/tests/test_scalarmath.py b/numpy/core/tests/test_scalarmath.py
index becd65b11..90078a2ea 100644
--- a/numpy/core/tests/test_scalarmath.py
+++ b/numpy/core/tests/test_scalarmath.py
@@ -5,14 +5,14 @@ import itertools
 import operator
 import platform
 import pytest
-from hypothesis import given, settings, Verbosity, assume
+from hypothesis import given, settings, Verbosity
 from hypothesis.strategies import sampled_from
 
 import numpy as np
 from numpy.testing import (
     assert_, assert_equal, assert_raises, assert_almost_equal,
     assert_array_equal, IS_PYPY, suppress_warnings, _gen_alignment_data,
-    assert_warns, assert_raises_regex,
+    assert_warns,
     )
 
 types = [np.bool_, np.byte, np.ubyte, np.short, np.ushort, np.intc, np.uintc,
diff --git a/numpy/core/tests/test_umath.py b/numpy/core/tests/test_umath.py
index 4f57c0088..18e43257a 100644
--- a/numpy/core/tests/test_umath.py
+++ b/numpy/core/tests/test_umath.py
@@ -15,7 +15,7 @@ from numpy.testing import (
     assert_, assert_equal, assert_raises, assert_raises_regex,
     assert_array_equal, assert_almost_equal, assert_array_almost_equal,
     assert_array_max_ulp, assert_allclose, assert_no_warnings, suppress_warnings,
-    _gen_alignment_data, assert_array_almost_equal_nulp, assert_warns
+    _gen_alignment_data, assert_array_almost_equal_nulp
     )
 
 def get_glibc_version():
diff --git a/numpy/core/tests/test_umath_accuracy.py b/numpy/core/tests/test_umath_accuracy.py
index a703c697a..32e2dca66 100644
--- a/numpy/core/tests/test_umath_accuracy.py
+++ b/numpy/core/tests/test_umath_accuracy.py
@@ -1,5 +1,4 @@
 import numpy as np
-import platform
 import os
 from os import path
 import sys