How to deregister an invalid test?

Hi there,

Recently I downloaded the lava-test-0.2.0-2011.08.tar.gz from launchpad and installed it by command "sudo ./setup.py install". And then I want to try the stream.json in directory example/stream.json, so I run this command to register this test "lava-test register-test ./example/stream.json".

After that I execute command "lava-test list-tests" and always got below error messages:

terguo01@ubuntu:~/lava-test-0.2.0-2011.08$ lava-test list-tests
Tests built directly into Abrek:
 - bootchart
 - firefox
 - glmemperf
 - gmpbench
 - gtkperf
 - ltp
 - peacekeeperposixtestsuite
 - pwrmgmt
 - pybench
 - smem
 - stream
 - tiobench
 - x11perf
 - xrestop
Tests provided by installed python packages:
Tests provided by Abrek registry:
Traceback (most recent call last):
  File "/usr/local/bin/lava-test", line 5, in <module>
    pkg_resources.run_script('lava-test==0.2.0', 'lava-test')
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 467, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1200, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/EGG-INFO/scripts/lava-test", line 30, in <module>
    exit_code = abrek.main.main(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/main.py", line 28, in main
    return cmd_func.main(argv)
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/command.py", line 68, in main
    return self.run()
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/builtins.py", line 155, in run
    for test in provider:
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/providers.py", line 139, in __iter__
    self._fill_cache()
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/providers.py", line 133, in _fill_cache
    test = self._load_remote_test(test_url)
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/providers.py", line 122, in _load_remote_test
    with cache.open_cached_url(test_url) as stream:
  File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/local/lib/python2.7/dist-packages/lava_test-0.2.0-py2.7.egg/abrek/cache.py", line 64, in open_cached_url
    stream = urllib2.urlopen(url)
  File "/usr/lib/python2.7/urllib2.py", line 126, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 383, in open
    protocol = req.get_type()
  File "/usr/lib/python2.7/urllib2.py", line 245, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: ./example/stream.json
terguo01@ubuntu:~/lava-test-0.2.0-2011.08$

I realized that I used wrong way to register a test from .json file. So what's the correct way to do it and how to get rid of such error messages?