remove use of open-cli

package.json

@@ -20,8 +20,8 @@
   "scripts": {
     "add:sibling": "node buildutils/lib/add-sibling.js",
     "analyze": "jlpm run analyze:dev",
-    "analyze:dev": "cd dev_mode && jlpm run build --analyze && open-cli static/stats.html",
-    "analyze:prod": "cd dev_mode && jlpm run build:prod --analyze && open-cli static/stats.html",
+    "analyze:dev": "cd dev_mode && jlpm run build --analyze",
+    "analyze:prod": "cd dev_mode && jlpm run build:prod --analyze",
     "build": "jlpm run build:dev",
     "build:core": "cd jupyterlab/staging && jlpm && (jlpm deduplicate || jlpm) && jlpm run build",
     "build:dev": "jlpm run integrity && jlpm run build:vega && jlpm run build:packages && cd dev_mode && jlpm run build",
@@ -99,7 +99,6 @@
     "husky": "^2.3.0",
     "lerna": "^3.13.2",
     "lint-staged": "^8.1.5",
-    "open-cli": "^5.0.0",
     "prettier": "^1.18.2",
     "tslint": "^5.15.0",
     "tslint-config-prettier": "^1.18.0",