Remove WillRunPageRepeat and DidRunPageRpeat hooks since they are not used.

tools/telemetry/telemetry/page/page_test.py

Index: tools/telemetry/telemetry/page/page_test.py
diff --git a/tools/telemetry/telemetry/page/page_test.py b/tools/telemetry/telemetry/page/page_test.py
index 39397391f38b78a943f429ee7180dd9be3934580..74bab7dac8271dc23947c7ec1486f19b663b3952 100644
--- a/tools/telemetry/telemetry/page/page_test.py
+++ b/tools/telemetry/telemetry/page/page_test.py
@@ -216,12 +216,6 @@ class PageTest(command_line.Command):
     """
     self.options = None
 
-  def WillRunPageRepeats(self, page):
-    """Override to do operations before each page is iterated over."""
-
-  def DidRunPageRepeats(self, page):
-    """Override to do operations after each page is iterated over."""
-
   def WillNavigateToPage(self, page, tab):
     """Override to do operations before the page is navigated, notably Telemetry
     will already have performed the following operations on the browser before