[chore] Remove redundant lint-staged config from litegraph

Frontend's root lint-staged config already handles all file types

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/lib/litegraph/lint-staged.config.js

@@ -1,14 +0,0 @@
-export default {
-  "*.css": stagedFiles => `prettier --write ${stagedFiles.join(" ")}`,
-
-  "*.js": stagedFiles => prettierAndEslint(stagedFiles),
-
-  "*.{ts,mts}": stagedFiles => [...prettierAndEslint(stagedFiles), "tsc"],
-}
-
-function prettierAndEslint(fileNames) {
-  return [
-    `prettier --write ${fileNames.join(" ")}`,
-    `eslint --fix ${fileNames.join(" ")}`,
-  ]
-}