update: eslint-plugin-standard is deprecated

Author: hawkeye64

demo/package.json

@@ -34,7 +34,6 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-quasar": "^1.0.0",
-    "eslint-plugin-standard": "^4.1.0",
     "eslint-plugin-vue": "^7.3.0",
     "quasar-app-extension-example-viewer": "^1.1.0",
     "quasar-app-extension-json-api-viewer": "^1.3.0"

ui/package.json

@@ -71,7 +71,6 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-quasar": "^1.0.0",
-    "eslint-plugin-standard": "^4.1.0",
     "eslint-plugin-vue": "^7.3.0",
     "fs-extra": "^9.0.1",
     "open": "^7.3.0",