remove outdated unittest ref and fix the name of a test func

Author: d-v-b

zarr/tests/test_storage.py

@@ -1288,7 +1288,7 @@ def test_filters(self):
 
 
 @pytest.mark.skipif(have_fsspec is False, reason="needs fsspec")
-class TestN5FSStore(TestFSStore, unittest.TestCase):
+class TestN5FSStore(TestFSStore):
     def create_store(self, normalize_keys=False):
         path = tempfile.mkdtemp(suffix='.n5')
         atexit.register(atexit_rmtree, path)
@@ -1362,7 +1362,7 @@ def test_init_group_overwrite_path(self):
     def test_init_group_overwrite_chunk_store(self):
         self._test_init_group_overwrite_chunk_store('C')
 
-    def test_key_separator(self):
+    def test_dimension_separator(self):
         with pytest.raises(TypeError):
             self.create_store(key_separator='.')