Bug 1802535 - Remove the leaf feature from profiler arguments of talos and browsertime r=perftest-reviewers,sparky

Previously we had a "leaf" feature but it's been removed in Bug 1571089. It
doesn't break the tests, but it always outputs an error string to the std out
and it might be annoying for our users or it can get in the way of analyzing
other errors. It's good to remove it.

Differential Revision: https://phabricator.services.mozilla.com/D163126

testing/raptor/raptor/browsertime/base.py

@@ -6,19 +6,18 @@
 
 from __future__ import absolute_import, division
 
+import json
+import os
+import re
+import sys
 from abc import ABCMeta, abstractmethod
 from copy import deepcopy
 
-import os
-import json
-import re
-import six
-import sys
-
 import mozprocess
-from manifestparser.util import evaluate_list_from_string
+import six
 from benchmark import Benchmark
 from logger.logger import RaptorLogger
+from manifestparser.util import evaluate_list_from_string
 from perftest import Perftest
 from results import BrowsertimeResultsHandler
 
@@ -443,7 +442,7 @@ class Browsertime(Perftest):
                 (
                     "gecko_profile_features",
                     "--firefox.geckoProfilerParams.features",
-                    "js,leaf,stackwalk,cpu,screenshots",
+                    "js,stackwalk,cpu,screenshots",
                 ),
                 (
                     "gecko_profile_threads",

testing/talos/talos/gecko_profile.py

@@ -13,8 +13,8 @@ import tempfile
 import zipfile
 
 import mozfile
-from mozlog import get_proxy_logger
 from mozgeckoprofiler import ProfileSymbolicator, save_gecko_profile
+from mozlog import get_proxy_logger
 
 LOG = get_proxy_logger()
 
@@ -39,7 +39,7 @@ class GeckoProfile(object):
         gecko_profile_interval = test_config.get("gecko_profile_interval", 1)
         gecko_profile_entries = test_config.get("gecko_profile_entries", 1000000)
         gecko_profile_features = test_config.get(
-            "gecko_profile_features", "js,leaf,stackwalk,cpu"
+            "gecko_profile_features", "js,stackwalk,cpu"
         )
         gecko_profile_threads = test_config.get(
             "gecko_profile_threads", "GeckoMain,Compositor"