Removing Page.WaitToLoad and update all pagesets to use explicit wait actions

tools/telemetry/telemetry/page/actions/tap_element.py

Index: tools/telemetry/telemetry/page/actions/tap_element.py
diff --git a/tools/telemetry/telemetry/page/actions/tap_element.py b/tools/telemetry/telemetry/page/actions/tap_element.py
index f3a4734a20e93023a29cbf01fbdeb1374208c517..f8c669eda7855cfb4a7b9b820e4ff389cf9d6f21 100644
--- a/tools/telemetry/telemetry/page/actions/tap_element.py
+++ b/tools/telemetry/telemetry/page/actions/tap_element.py
@@ -4,7 +4,6 @@
 
 from telemetry.core import exceptions
 from telemetry.core import util
-from telemetry.page import page as page_module
 from telemetry.page.actions import page_action
 
 class TapElementAction(page_action.PageAction):
@@ -41,5 +40,3 @@ class TapElementAction(page_action.PageAction):
           'window.__tap_event_finished'), 60)
     else:
       DoTap()
-
-    page_module.Page.WaitForPageToLoad(self, tab, 60)