Revert "build: roll infra_paths changes"

scripts/slave/recipe_modules/amp/example.py

 
 DEPS = [
   'amp',
-  'depot_tools/infra_paths',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/properties',
 ]
 
 BUILDERS = {
   'normal_example': {
     'device_name': ['SampleDevice'],
     'device_os': ['SampleDeviceOS'],
     'api_address': '127.0.0.1',
@@ skipping 81 matching lines @@
 
 PROPERTIES = {
   'buildername': Property(),
 }
 
 def RunSteps(api, buildername):
   api.amp.setup()
   api.amp.set_config('main_pool')
 
   builder = BUILDERS[buildername]
-  api.path['checkout'] = api.infra_paths['slave_build'].join('src')
+  api.path['checkout'] = api.path['slave_build'].join('src')
 
   gtest_test_id = api.amp.trigger_test_suite(
       'example_gtest_suite', 'gtest',
       api.amp.gtest_arguments('example_gtest_suite'),
       api.amp.amp_arguments(
           device_minimum_os=builder.get('device_minimum_os', None),
           device_name=builder.get('device_name', None),
           device_oem=builder.get('device_oem', None),
           device_os=builder.get('device_os', None),
           device_timeout=builder.get('device_timeout', None),
@@ skipping 91 matching lines @@
       api.test('bad_device_data_for_collect') +
       api.properties.generic(buildername='split_example') +
       api.override_step_data('[collect] load example_gtest_suite',
                              api.json.output({})))
 
   yield (
     api.test('bad_test_id_data_for_upload') +
     api.properties.generic(buildername='split_example') +
     api.override_step_data('[upload logcat] load example_gtest_suite data',
                            api.json.output({})))