Remove the rest of Sauce support for stability runs (including JWT)

Fixes #9903.

.travis.yml

@@ -12,8 +12,6 @@ addons:
     - www2.web-platform.test
     - xn--n8j6ds53lwwkrqhv28a.web-platform.test
     - xn--lve-6lad.web-platform.test
-  jwt:
-    secure: N9lvgkqUPtFlz6Vpa6qTPFhymEsDCsbaCsT64/hj3vlHRxK94r5+ugVJ3zm99zC0q2j1ish8yJC7mN/W4wRfBE4sAwmdxrlowxF1DDGCkaLE9i/GWW92s0fBVGJmXLh8kwNkQ31hMOsaGfHIMpeLFS7Se741te7YqsHIzmBCdQs=
 before_install:
   # This needs be sourced as it sets various env vars
   - . ./tools/ci/before_install.sh

tools/ci/check_stability.py

@@ -172,22 +172,6 @@ def get_parser():
     return parser
 
 
-def set_default_args(kwargs):
-    kwargs.set_if_none("sauce_platform",
-                       os.environ.get("PLATFORM"))
-    kwargs.set_if_none("sauce_build",
-                       os.environ.get("TRAVIS_BUILD_NUMBER"))
-    python_version = os.environ.get("TRAVIS_PYTHON_VERSION")
-    kwargs.set_if_none("sauce_tags",
-                       [python_version] if python_version else [])
-    kwargs.set_if_none("sauce_tunnel_id",
-                       os.environ.get("TRAVIS_JOB_NUMBER"))
-    kwargs.set_if_none("sauce_user",
-                       os.environ.get("SAUCE_USERNAME"))
-    kwargs.set_if_none("sauce_key",
-                       os.environ.get("SAUCE_ACCESS_KEY"))
-
-
 def pr():
     pr = os.environ.get("TRAVIS_PULL_REQUEST", "false")
     return pr if pr != "false" else None
@@ -301,10 +285,6 @@ def run(venv, wpt_args, **kwargs):
 
     browser_name = wpt_args.product.split(":")[0]
 
-    if browser_name == "sauce" and not wpt_args.sauce_key:
-        logger.warning("Cannot run tests on Sauce Labs. No access key.")
-        return retcode
-
     pr_number = pr()
 
     with TravisFold("browser_setup"):
@@ -338,8 +318,6 @@ def run(venv, wpt_args, **kwargs):
 
             wpt_kwargs["test_list"] = list(tests_changed | files_affected)
 
-        set_default_args(wpt_kwargs)
-
         do_delayed_imports()
 
         wpt_kwargs["stability"] = True