chore: remove unused packages (#27403)

I was playing around with bun install and found an unnecessary line :)

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package.json

@@ -75,7 +75,6 @@
       "packages/cdk-assets",
       "packages/@aws-cdk/*",
       "packages/awslint",
-      "packages/@aws-cdk-containers/*",
       "packages/@aws-cdk-testing/*",
       "packages/@aws-cdk/*/lambda-packages/*",
       "tools/@aws-cdk/cdk-build-tools",