TEST: Bump some final removals to 6.0

Author: effigies

nibabel/tests/test_removalschedule.py

@@ -17,10 +17,10 @@
     ("6.0.0", [("nibabel.loadsave", "guessed_image_type"),
                ("nibabel.loadsave", "read_img_data"),
                ("nibabel.orientations", "flip_axis"),
-    ]),
-    ("5.0.0", [("nibabel.pydicom_compat", "dicom_test"),
+               ("nibabel.pydicom_compat", "dicom_test"),
                ("nibabel.onetime", "setattr_on_read"),
-               ("nibabel.gifti.gifti", "data_tag"),
+    ]),
+    ("5.0.0", [("nibabel.gifti.gifti", "data_tag"),
                ("nibabel.gifti.giftiio", "read"),
                ("nibabel.gifti.giftiio", "write"),
                ("nibabel.gifti.parse_gifti_fast", "Outputter"),