upload_dm_results: Remove JSON validation step

infra/bots/recipes/upload_dm_results.expected/trybot.json

Index: infra/bots/recipes/upload_dm_results.expected/trybot.json
diff --git a/infra/bots/recipes/upload_dm_results.expected/trybot.json b/infra/bots/recipes/upload_dm_results.expected/trybot.json
index ced83e6861fc1862e4433cd801638b39e4566265..622f0d5954c97b2528c6e17f261b05ef5291d484 100644
--- a/infra/bots/recipes/upload_dm_results.expected/trybot.json
+++ b/infra/bots/recipes/upload_dm_results.expected/trybot.json
@@ -3,20 +3,6 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
-      "[CWD]/dm/dm.json",
-      "/path/to/tmp/json"
-    ],
-    "name": "validate dm.json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
-      "@@@STEP_LOG_END@json.output (invalid)@@@"
-    ]
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[CWD]/tmp_upload",
       "511"