remove polymer-bundler package (tensorflow#1368)

Author: tafsiri

integration_tests/benchmarks/package.json

@@ -9,11 +9,11 @@
   },
   "devDependencies": {
     "@tensorflow/tfjs": "latest",
+    "@tensorflow/tfjs-converter": "latest",
     "@tensorflow/tfjs-core": "latest",
+    "@tensorflow/tfjs-data": "latest",
     "@tensorflow/tfjs-layers": "latest",
-    "@tensorflow/tfjs-converter": "latest",
     "@tensorflow/tfjs-node": "latest",
-    "@tensorflow/tfjs-data": "latest",
     "@types/jasmine": "~2.5.53",
     "clang-format": "~1.2.4",
     "firebase": "~5.3.0",
@@ -25,7 +25,6 @@
     "karma-chrome-launcher": "~2.2.0",
     "karma-jasmine": "~1.1.0",
     "karma-typescript": "~4.0.0",
-    "polymer-bundler": "~3.0.1",
     "ts-node": "~7.0.0",
     "tsc": "^1.20150623.0",
     "tsify": "^3.0.4",
@@ -43,4 +42,4 @@
   "engines": {
     "yarn": ">= 1.0.0"
   }
-}
+}