version fix (jupyter-book#250)

version fix

Author: choldgraf

jupyter_book/commands/version.py

@@ -4,8 +4,4 @@
 
 
 def version():
-    parser = argparse.ArgumentParser(
-        description="Print the version of Jupyter Book currently in-use.")
-    # Args won't be used, just keeping so we don't break PEP
-    parser.parse_args(sys.argv)
     print("Running Jupyter Book version: {}".format(__version__))