[Telemetry refactor] Drop "2" from method calls to JS API

tools/perf/page_sets/tough_scheduling_cases.py

Index: tools/perf/page_sets/tough_scheduling_cases.py
diff --git a/tools/perf/page_sets/tough_scheduling_cases.py b/tools/perf/page_sets/tough_scheduling_cases.py
index ac0de953df9a0bf25402ac8c83233403ea2295ec..1a817a1a93930916b2fa44416ccdf43a7c2065e5 100644
--- a/tools/perf/page_sets/tough_scheduling_cases.py
+++ b/tools/perf/page_sets/tough_scheduling_cases.py
@@ -377,16 +377,16 @@ class SecondBatchJsPage(ToughSchedulingCasesPage):
     action_runner.TapElement(selector='div[id="spinner"]')
     # Begin the action immediately because we want the page to update smoothly
     # even while resources are being loaded.
-    action_runner.WaitForJavaScriptCondition2('window.__ready !== undefined')
+    action_runner.WaitForJavaScriptCondition('window.__ready !== undefined')
 
     with action_runner.CreateGestureInteraction('LoadAction'):
-      action_runner.ExecuteJavaScript2('kickOffLoading()')
-      action_runner.WaitForJavaScriptCondition2('window.__ready')
+      action_runner.ExecuteJavaScript('kickOffLoading()')
+      action_runner.WaitForJavaScriptCondition('window.__ready')
       # Click one second after the resources have finished loading.
       action_runner.Wait(1)
       action_runner.TapElement(selector='input[id="run"]')
       # Wait for the test to complete.
-      action_runner.WaitForJavaScriptCondition2('window.__finished')
+      action_runner.WaitForJavaScriptCondition('window.__finished')
 
 
 class ToughSchedulingCasesPageSet(story.StorySet):