Remove failing step from engine_v2 recipes.

This step was added for debugging purposes and was not removed before
sending the CL.

Change-Id: Id44b57d6f057d576071d4a3261799197f6170cbe
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/16785
Reviewed-by: Keyong Han <keyonghan@google.com>
Commit-Queue: Godofredo Contreras <godofredoc@google.com>
diff --git a/recipes/engine_v2/builder.expected/basic.json b/recipes/engine_v2/builder.expected/basic.json
index 44031b9..7a64f93 100644
--- a/recipes/engine_v2/builder.expected/basic.json
+++ b/recipes/engine_v2/builder.expected/basic.json
@@ -430,39 +430,6 @@
   },
   {
     "cmd": [
-      "vpython",
-      "-u",
-      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
-      "--json-output",
-      "/path/to/tmp/json",
-      "listdir",
-      "[CACHE]/builder/src/out/host_debug_unopt/dart-sdk/bin"
-    ],
-    "cwd": "[CACHE]/builder/src/flutter",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/src",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "infra_step": true,
-    "name": "checkout files",
-    "~followup_annotations": [
-      "@@@STEP_LOG_END@listdir@@@"
-    ]
-  },
-  {
-    "cmd": [
       "pub",
       "get"
     ],
diff --git a/recipes/engine_v2/builder.expected/basic_custom_vars.json b/recipes/engine_v2/builder.expected/basic_custom_vars.json
index 44031b9..7a64f93 100644
--- a/recipes/engine_v2/builder.expected/basic_custom_vars.json
+++ b/recipes/engine_v2/builder.expected/basic_custom_vars.json
@@ -430,39 +430,6 @@
   },
   {
     "cmd": [
-      "vpython",
-      "-u",
-      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
-      "--json-output",
-      "/path/to/tmp/json",
-      "listdir",
-      "[CACHE]/builder/src/out/host_debug_unopt/dart-sdk/bin"
-    ],
-    "cwd": "[CACHE]/builder/src/flutter",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/src",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "linux"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "infra_step": true,
-    "name": "checkout files",
-    "~followup_annotations": [
-      "@@@STEP_LOG_END@listdir@@@"
-    ]
-  },
-  {
-    "cmd": [
       "pub",
       "get"
     ],
diff --git a/recipes/engine_v2/builder.expected/mac.json b/recipes/engine_v2/builder.expected/mac.json
index 9957004..6fc3a06 100644
--- a/recipes/engine_v2/builder.expected/mac.json
+++ b/recipes/engine_v2/builder.expected/mac.json
@@ -485,39 +485,6 @@
   },
   {
     "cmd": [
-      "vpython",
-      "-u",
-      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
-      "--json-output",
-      "/path/to/tmp/json",
-      "listdir",
-      "[CACHE]/builder/src/out/host_debug_unopt/dart-sdk/bin"
-    ],
-    "cwd": "[CACHE]/builder/src/flutter",
-    "env": {
-      "ANDROID_HOME": "[CACHE]/builder/src/third_party/android_tools/sdk",
-      "DEPOT_TOOLS": "RECIPE_REPO[depot_tools]",
-      "ENGINE_CHECKOUT_PATH": "[CACHE]/builder/src",
-      "ENGINE_PATH": "[CACHE]/builder",
-      "LUCI_BRANCH": "",
-      "LUCI_CI": "True",
-      "LUCI_PR": "",
-      "LUCI_WORKDIR": "[START_DIR]",
-      "OS": "darwin"
-    },
-    "env_prefixes": {
-      "PATH": [
-        "[CACHE]/builder/src/third_party/dart/tools/sdks/dart-sdk/bin"
-      ]
-    },
-    "infra_step": true,
-    "name": "checkout files",
-    "~followup_annotations": [
-      "@@@STEP_LOG_END@listdir@@@"
-    ]
-  },
-  {
-    "cmd": [
       "pub",
       "get"
     ],
diff --git a/recipes/engine_v2/builder.py b/recipes/engine_v2/builder.py
index 0eabf66..616e608 100644
--- a/recipes/engine_v2/builder.py
+++ b/recipes/engine_v2/builder.py
@@ -71,7 +71,6 @@
   tests = [t for t in build.get('tests', []) if t.get('type') == 'local']
   with api.context(env=env, env_prefixes=env_prefixes,
                    cwd=checkout.join('flutter')):
-    api.file.listdir('checkout files', checkout.join('out', 'host_debug_unopt', 'dart-sdk', 'bin'))
     # Run pub on all of the pub_dirs.
     for pub in pub_dirs:
       pub_dir = api.path.abs_to_path(