Remove unused @typescript-eslint/no-deprecated directive

CI reports this directive as unused. The deprecation warning it was
suppressing only appears locally, not on CI.

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

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

Author: justin808

eslint.config.ts

@@ -16,7 +16,6 @@ const compat = new FlatCompat({
   allConfig: js.configs.all,
 });
 
-// eslint-disable-next-line @typescript-eslint/no-deprecated
 export default tsEslint.config([
   // eslint-disable-next-line @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access
   includeIgnoreFile(path.resolve(__dirname, '.gitignore')),