Remove flint from marketplace

The entry's source points to ./external_plugins/autofix-bot, which has
never existed in this repository.

.claude-plugin/marketplace.json

@@ -39,17 +39,6 @@
       },
       "homepage": "https://github.com/adobe/skills/tree/main/plugins/creative-cloud/adobe-for-creativity"
     },
-    {
-      "name": "adspirer-ads-agent",
-      "description": "Cross-platform ad management for Google Ads, Meta Ads, TikTok Ads, and LinkedIn Ads. 91 tools for keyword research, campaign creation, performance analysis, and budget optimization.",
-      "category": "productivity",
-      "source": {
-        "source": "url",
-        "url": "https://github.com/amekala/adspirer-mcp-plugin.git",
-        "sha": "c40623f1aa7b568e960d3f2e2558a6fcf10e6c18"
-      },
-      "homepage": "https://www.adspirer.com"
-    },
     {
       "name": "agent-sdk-dev",
       "description": "Development kit for working with the Claude Agent SDK",
@@ -216,16 +205,6 @@
       },
       "homepage": "https://auth0.com/docs/quickstart/agent-skills"
     },
-    {
-      "name": "autofix-bot",
-      "description": "Code review agent that detects security vulnerabilities, code quality issues, and hardcoded secrets. Combines 5,000+ static analyzers to scan your code and dependencies for CVEs.",
-      "author": {
-        "name": "DeepSource Corp"
-      },
-      "category": "security",
-      "source": "./external_plugins/autofix-bot",
-      "homepage": "https://github.com/anthropics/claude-plugins-public/tree/main/external_plugins/autofix-bot"
-    },
     {
       "name": "aws-agents",
       "description": "Build, deploy, and operate AI agents on AWS. Skills for scaffolding agents with Amazon Bedrock AgentCore, connecting tools, memory, policies, evaluation, debugging, and production hardening.",
@@ -860,16 +839,6 @@
       },
       "homepage": "https://github.com/firecrawl/firecrawl-claude-plugin.git"
     },
-    {
-      "name": "flint",
-      "description": "Build and manage websites with Flint's AI website builder through natural conversation.",
-      "source": {
-        "source": "url",
-        "url": "https://github.com/tryflint/claude-code-plugin.git",
-        "sha": "f3d56e33ed2fb3ed9b4f02e0fc65d0a79b24bf4d"
-      },
-      "homepage": "https://www.tryflint.com/docs/claude-code-plugin"
-    },
     {
       "name": "frontend-design",
       "description": "Create distinctive, production-grade frontend interfaces with high design quality. Generates creative, polished code that avoids generic AI aesthetics.",