Build: Remove start:hot from package.json (#65718)

package.json

@@ -42,7 +42,6 @@
     "prettier:write": "prettier --list-different \"**/*.{js,ts,tsx,scss,md,mdx}\" --write",
     "start": "yarn themes:generate && yarn dev --watch",
     "start:noTsCheck": "yarn start --env noTsCheck=1",
-    "start:hot": "yarn themes:generate && NODE_ENV=hot yarn dev --config scripts/webpack/webpack.hot.js",
     "stats": "webpack --mode production --config scripts/webpack/webpack.prod.js --profile --json > compilation-stats.json",
     "storybook": "yarn workspace @grafana/ui storybook --ci",
     "storybook:build": "yarn workspace @grafana/ui storybook:build",

public/views/index-template.html

@@ -188,8 +188,7 @@
           2. If you host grafana under subpath make sure your grafana.ini root_url setting includes subpath. If not
           using a reverse proxy make sure to set serve_from_sub_path to true.<br />
           <br />
-          3. If you have a local dev build make sure you build frontend using: yarn start, yarn start:hot, or yarn
-          build<br />
+          3. If you have a local dev build make sure you build frontend using: yarn start, or yarn build<br />
           <br />
           4. Sometimes restarting grafana-server can help<br />
           <br />