diff --git a/django/contrib/gis/gdal/prototypes/errcheck.py b/django/contrib/gis/gdal/prototypes/errcheck.py
index 5d2963402a..3006107e45 100644
--- a/django/contrib/gis/gdal/prototypes/errcheck.py
+++ b/django/contrib/gis/gdal/prototypes/errcheck.py
@@ -3,10 +3,12 @@
  ctypes prototypes.
 """
 from ctypes import c_void_p, string_at
+
 from django.contrib.gis.gdal.error import check_err, OGRException, SRSException
 from django.contrib.gis.gdal.libgdal import lgdal
 from django.utils import six
 
+
 # Helper routines for retrieving pointers and/or values from
 # arguments passed in by reference.
 def arg_byref(args, offset=-1):
@@ -17,13 +19,6 @@ def ptr_byref(args, offset=-1):
     "Returns the pointer argument passed in by-reference."
     return args[offset]._obj
 
-def check_bool(result, func, cargs):
-    "Returns the boolean evaluation of the value."
-    if bool(result):
-        return True
-    else:
-        return False
-
 ### String checking Routines ###
 def check_const_string(result, func, cargs, offset=None):
     """
@@ -111,7 +106,6 @@ def check_errcode(result, func, cargs):
     Check the error code returned (c_int).
     """
     check_err(result)
-    return
 
 def check_pointer(result, func, cargs):
     "Makes sure the result pointer is valid."
diff --git a/django/contrib/gis/gdal/prototypes/geom.py b/django/contrib/gis/gdal/prototypes/geom.py
index 6a5239399e..f8016bc7bf 100644
--- a/django/contrib/gis/gdal/prototypes/geom.py
+++ b/django/contrib/gis/gdal/prototypes/geom.py
@@ -1,7 +1,7 @@
 from ctypes import c_char_p, c_double, c_int, c_void_p, POINTER
 from django.contrib.gis.gdal.envelope import OGREnvelope
 from django.contrib.gis.gdal.libgdal import lgdal
-from django.contrib.gis.gdal.prototypes.errcheck import check_bool, check_envelope
+from django.contrib.gis.gdal.prototypes.errcheck import check_envelope
 from django.contrib.gis.gdal.prototypes.generation import (const_string_output,
     double_output, geom_output, int_output, srs_output, string_output, void_output)
 
@@ -20,7 +20,7 @@ def pnt_func(f):
 def topology_func(f):
     f.argtypes = [c_void_p, c_void_p]
     f.restype = c_int
-    f.errchck = check_bool
+    f.errchck = bool
     return f
 
 ### OGR_G ctypes function prototypes ###
diff --git a/django/contrib/gis/geos/tests/test_geos_mutation.py b/django/contrib/gis/geos/tests/test_geos_mutation.py
index 1aa9a1db32..79084f9c2b 100644
--- a/django/contrib/gis/geos/tests/test_geos_mutation.py
+++ b/django/contrib/gis/geos/tests/test_geos_mutation.py
@@ -12,15 +12,6 @@ if HAS_GEOS:
     from ..error import GEOSIndexError
 
 
-def getItem(o,i):
-    return o[i]
-
-def delItem(o,i):
-    del o[i]
-
-def setItem(o,i,v):
-    o[i] = v
-
 if HAS_GEOS:
     def api_get_distance(x):
         return x.distance(Point(-200,-200))