remove update-all script

Author: Jendrik Wenke

vscode-dotty/package.json

@@ -49,7 +49,6 @@
     "tsc": "./node_modules/.bin/tsc",
     "vscode:prepublish": "npm run update-all && ./node_modules/.bin/tsc -p ./",
     "compile": "./node_modules/.bin/tsc -p ./",
-    "update-all": "npm install",
     "test": "node ./node_modules/vscode/bin/test",
     "postinstall": "node ./node_modules/vscode/bin/install && curl -L -o out/coursier https://github.com/coursier/coursier/raw/v1.0.0/coursier"
   },