Remove flint from marketplace (#1769)

.claude-plugin/marketplace.json

@@ -867,16 +867,6 @@
       },
       "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.",