fix bug in tests

Author: blaylockbk

tests/test_canadian.py

@@ -30,7 +30,7 @@
         i.unlink()
 
 
-class TestHRDPS():
+class TestHRDPS:
     def test_hrdps_download():
         H = Herbie(
             yesterday_12z,
@@ -46,7 +46,6 @@ def test_hrdps_download():
         assert H.get_localFilePath().exists()
         f.unlink()
 
-
     def test_hrdps_north_download():
         H = Herbie(
             yesterday_12z,
@@ -94,8 +93,6 @@ def test_rdps_download():
         f.unlink()
 
 
-
-
 def test_hrdps_to_netcdf():
     """Check that a xarray Dataset can be written to a NetCDF file.