remove travis remains (#3051)

app/project.metadata.json

@@ -1,33 +0,0 @@
-{
-  "standalone": {
-    "projectRoot": ".."
-  },
-  "deploy": {
-    "releaseVersion": "",
-    "tagAliases": [],
-    "tagVersionSuffix": ""
-  },
-  "scripts": {
-    "prebuild": [
-      {
-        "command": "./scripts/local/check-for-extra-node-modules"
-      },
-      {
-        "command": "mkdir",
-        "args": [
-          "-p",
-          "$THIS_PROJECT_ROOT_PATH/.tmp"
-        ]
-      },
-      {
-        "command": "cp",
-        "args": [
-          "$THIS_PROJECT_SOURCE_ROOT_PATH/app.config.json.tpl",
-          "$THIS_PROJECT_ROOT_PATH/.tmp/app.config.json"
-        ]
-      }
-    ],
-    "postinstall": [
-    ]
-  }
-}