[tools/perf] Remove default values of benchmark_dirs and top_level_dir in chromium_config module

tools/perf/core/path_util.py

 # Copyright 2015 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.
 
 import os
 import sys
 
-sys.path.insert(1, os.path.join(os.path.abspath(__file__), '..', '..'))
-
-from chrome_telemetry_build import chromium_config
-
 
 def GetChromiumSrcDir():
-  return chromium_config.GetChromiumSrcDir()
-
+  return os.path.abspath(os.path.join(
+      os.path.dirname(__file__), '..', '..', '..'))
 
 
 def GetTelemetryDir():
-  return chromium_config.GetTelemetryDir()
+  return os.path.join(
+      GetChromiumSrcDir(), 'third_party', 'catapult', 'telemetry')
 
 
 def GetPerfDir():
   return os.path.join(GetChromiumSrcDir(), 'tools', 'perf')
 
 
 def GetPerfStorySetsDir():
   return os.path.join(GetPerfDir(), 'page_sets')
 
 
 def GetPerfBenchmarksDir():
   return os.path.join(GetPerfDir(), 'benchmarks')
 
 
 def AddTelemetryToPath():
   telemetry_path = GetTelemetryDir()
   if telemetry_path not in sys.path:
     sys.path.insert(1, telemetry_path)
 
 
 def AddPyUtilsToPath():
   py_utils_dir = os.path.join(
       GetChromiumSrcDir(), 'third_party', 'catapult', 'common', 'py_utils')
   if py_utils_dir not in sys.path:
     sys.path.insert(1, py_utils_dir)