Update helpers.py to accommodate change in the arguments of download_crds() (#617)

due to a new version of ci-watson being released.

Author: mdlpstsci

tests/helpers.py

@@ -231,7 +231,7 @@ def get_input_file(self, filename):
                         os.environ[var] = ref_path  # hacky hack hack
 
                 # Download reference files, if needed only.
-                download_crds(ref_file, timeout=self.timeout)
+                download_crds(ref_file)
 
     def compare_outputs(self, outputs, atol=0, rtol=1e-7, raise_error=True,
                         ignore_keywords_overwrite=None, verbose=True):