[tools/perf] Remove deprecated memory.* benchmarks

tools/perf/benchmarks/memory.py

-# Copyright 2013 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-from core import perf_benchmark
-
-from measurements import memory
-import page_sets
-from telemetry import benchmark
-
-
-@benchmark.Enabled('android')
-class MemoryMobile(perf_benchmark.PerfBenchmark):
-  test = memory.Memory
-  page_set = page_sets.MobileMemoryPageSet
-
-  @classmethod
-  def Name(cls):
-    return 'memory.mobile_memory'
-
-
-# Disable on yosemite due to crbug.com/517806
-# Disable on reference due to crbug.com/539728
-# Disable on all Mac as it's also failing on 10.11 and retina.
-# crbug.com/555045
-# Disabling on WebView due to crbug.com/621489
-@benchmark.Disabled('mac', 'android-webview', 'reference')
-class MemoryTop7Stress(perf_benchmark.PerfBenchmark):
-  """Use (recorded) real world web sites and measure memory consumption."""
-  test = memory.Memory
-  page_set = page_sets.Top7StressPageSet
-
-  @classmethod
-  def Name(cls):
-    return 'memory.top_7_stress'
-
-  @classmethod
-  def ShouldDisable(cls, possible_browser):
-    return cls.IsSvelte(possible_browser)  # http://crbug.com/555092
-