Removed django.contrib.gis.geometry.backend.

The layer of indirection is unchanged and undocumented
since its introduction in ff60c5f9de.

tests/gis_tests/relatedapp/tests.py

@@ -1,5 +1,4 @@
 from django.contrib.gis.db.models import Collect, Count, Extent, F, Union
-from django.contrib.gis.geometry.backend import Geometry
 from django.contrib.gis.geos import GEOSGeometry, MultiPoint, Point
 from django.db import connection
 from django.test import TestCase, skipUnlessDBFeature
@@ -177,8 +176,8 @@ class RelatedGeoModelTest(TestCase):
         for m, d, t in zip(gqs, gvqs, gvlqs):
             # The values should be Geometry objects and not raw strings returned
             # by the spatial database.
-            self.assertIsInstance(d['point'], Geometry)
-            self.assertIsInstance(t[1], Geometry)
+            self.assertIsInstance(d['point'], GEOSGeometry)
+            self.assertIsInstance(t[1], GEOSGeometry)
             self.assertEqual(m.point, d['point'])
             self.assertEqual(m.point, t[1])
 

tests/gis_tests/tests.py

@@ -8,16 +8,6 @@ try:
     HAS_POSTGRES = True
 except ImportError:
     HAS_POSTGRES = False
-except ImproperlyConfigured as e:
-    # If psycopg is installed but not geos, the import path hits
-    # django.contrib.gis.geometry.backend which will "helpfully" convert
-    # an ImportError into an ImproperlyConfigured.
-    # Here, we make sure we're only catching this specific case and not another
-    # ImproperlyConfigured one.
-    if e.args and e.args[0].startswith('Could not import user-defined GEOMETRY_BACKEND'):
-        HAS_POSTGRES = False
-    else:
-        raise
 
 
 if HAS_POSTGRES: