Drop rabbit-hole.io from studio list

README.md

@@ -23,7 +23,6 @@ The findings behind them get written up at [protolabs.studio](https://protolabs.
 
 The weights below are one substrate. The patterns that build everything else are open too:
 
-- [**`rabbit-hole.io`**](https://github.com/protoLabsAI/rabbit-hole.io) — research agent that turns a topic + budget into a knowledge graph, not a pile of links
 - [**`protoAgent`**](https://github.com/protoLabsAI/protoAgent) — A2A-native agent on LangGraph that grows at runtime via plugins, skills, and delegate agents
 - [**`release-tools`**](https://github.com/protoLabsAI/release-tools) — release-notes + Discord embed as one GitHub Action, on every repo
 - [**`protoBanana`**](https://github.com/protoLabsAI/protoBanana) · [**`protoCLI`**](https://github.com/protoLabsAI/protoCLI) · [**`protoWorkstacean`**](https://github.com/protoLabsAI/protoWorkstacean)