Remove page_set argument from benchmark.CreateExpectations

tools/telemetry/telemetry/benchmark.py

Index: tools/telemetry/telemetry/benchmark.py
diff --git a/tools/telemetry/telemetry/benchmark.py b/tools/telemetry/telemetry/benchmark.py
index 5d2dcc5d1577b3b2d6927a1e789c815877438cd6..ec2c87534a526b12cf688d097cb2a1ffa1ce988f 100644
--- a/tools/telemetry/telemetry/benchmark.py
+++ b/tools/telemetry/telemetry/benchmark.py
@@ -85,7 +85,7 @@ class Benchmark(command_line.Command):
       pt._enabled_strings = self._enabled_strings
 
     ps = self.CreatePageSet(finder_options)
-    expectations = self.CreateExpectations(ps)
+    expectations = self.CreateExpectations()
 
     self._DownloadGeneratedProfileArchive(finder_options)
 
@@ -196,7 +196,7 @@ class Benchmark(command_line.Command):
     return cls.PageSetClass()()
 
   @classmethod
-  def CreateExpectations(cls, ps):  # pylint: disable=W0613
+  def CreateExpectations(cls):  # pylint: disable=W0613
     """Get the expectations this test will run with.
 
     By default, it will create an empty expectations set. Override to generate