Remove spurious print statement. (#426)

Author: tetron

cwltool/load_tool.py

@@ -150,7 +150,6 @@ def validate_document(document_loader,  # type: Loader
     jobobj = None
     if "cwl:tool" in workflowobj:
         jobobj, _ = document_loader.resolve_all(workflowobj, uri)
-        print "ZZZZZ", jobobj
         uri = urllib.parse.urljoin(uri, workflowobj["https://w3id.org/cwl/cwl#tool"])
         del cast(dict, jobobj)["https://w3id.org/cwl/cwl#tool"]
         workflowobj = fetch_document(uri, fetcher_constructor=fetcher_constructor)[1]