Remove print statement and unused import

repo2docker/contentproviders/zenodo.py

@@ -4,7 +4,7 @@ import shutil
 
 from os import makedirs
 from os import path
-from urllib.request import build_opener, urlopen, Request
+from urllib.request import urlopen, Request
 from urllib.error import HTTPError
 from zipfile import ZipFile, is_zipfile
 

repo2docker/utils.py

@@ -422,8 +422,6 @@ doi_regexp = re.compile(
 def is_doi(val):
     """Returns None if val doesn't match pattern of a DOI.
     http://en.wikipedia.org/wiki/Digital_object_identifier."""
-    print(type(val))
-    print(val)
     return doi_regexp.match(val)