Remove aws-dev-toolkit official plugin (#5357)

Driver: lane-pa-aws-delist

.claude-plugin/marketplace.json

@@ -451,22 +451,6 @@
       },
       "homepage": "https://github.com/aws/agent-toolkit-for-aws"
     },
-    {
-      "name": "aws-dev-toolkit",
-      "description": "AWS development toolkit — 34 skills, 11 agents, and 3 MCP servers for building, migrating, and performing architecture reviews on AWS.",
-      "author": {
-        "name": "aws-samples"
-      },
-      "category": "development",
-      "source": {
-        "source": "git-subdir",
-        "url": "https://github.com/aws-samples/sample-claude-code-plugins-for-startups.git",
-        "path": "plugins/aws-dev-toolkit",
-        "ref": "main",
-        "sha": "3360d439a94e59fbf13eb0019eaf5735e4a23d8a"
-      },
-      "homepage": "https://github.com/aws-samples/sample-claude-code-plugins-for-startups"
-    },
     {
       "name": "aws-serverless",
       "description": "Design, build, deploy, test, and debug serverless applications with AWS Serverless services.",