更新 development-plan.mdx

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: huangyiirene

content/docs/development-plan.mdx

@@ -3,7 +3,7 @@ title: Development Roadmap
 description: ObjectDocs development plan and feature roadmap for GitHub-based documentation with Vercel deployment
 ---
 
-import { Target, Code, Sparkles, Database, Globe, Shield, GitBranch, Rocket } from 'lucide-react';
+import { Code, Sparkles, Globe, Shield, GitBranch, Rocket } from 'lucide-react';
 
 # ObjectDocs Development Roadmap