Fix the mock fits errors

tests/test_results.py

@@ -278,7 +278,6 @@ def test_is_empty_value(self):
         self.assertFalse(np.any(nums_is_empty))
 
         pairs_is_empty = table.is_empty_value("pairs")
-        print(pairs_is_empty)
         self.assertTrue(np.array_equal(pairs_is_empty, expected))
 
     def test_filter_by_index(self):

tests/utils/mock_fits.py

@@ -161,6 +161,14 @@ def get_fits(self, fits_idx, spoof_data=False):
         warnings.filterwarnings("ignore", category=AstropyUserWarning)
         for hdr_idx, HDUClass in enumerate(self.hdu_types):
             hdr = HDUClass()
+
+            # Remove the cards that know we will reinsert them below and
+            # require a specific order. We rely on the file order.
+            for key in ["GCOUNT", "NAXIS", "NAXIS1", "NAXIS2", "PCOUNT"]:
+                if key in hdr.header:
+                    del hdr.header[key]
+
+            # Insert all the cards from the file.
             for k, v, f in hdu_group.groups[hdr_idx]["keyword", "value", "format"]:
                 hdr.header[k] = self.lexical_cast(v, f)
             hdul.append(hdr)