Delete docs/to_situate directory (#851)

# What does this PR do?

No need for the cookbook now. Removing the folder

- [ ] Addresses issue (#issue)


## Test Plan

Please describe:
 - tests you ran to verify your changes with result summaries.
 - provide instructions so it can be reproduced.


## Sources

Please link relevant resources if necessary.


## Before submitting

- [ ] This PR fixes a typo or improves the docs (you can dismiss the
other checks if that's the case).
- [ ] Ran pre-commit to handle lint / formatting issues.
- [ ] Read the [contributor
guideline](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md),
      Pull Request section?
- [ ] Updated relevant documentation.
- [ ] Wrote necessary unit or integration tests.

docs/to_situate/developer_cookbook.md

@@ -1,41 +0,0 @@
-# Llama Stack Developer Cookbook
-
-Based on your developer needs, below are references to guides to help you get started.
-
-### Hosted Llama Stack Endpoint
-* Developer Need: I want to connect to a Llama Stack endpoint to build my applications.
-* Effort: 1min
-* Guide:
-  - Checkout our [DeepLearning course](https://www.deeplearning.ai/short-courses/introducing-multimodal-llama-3-2) on building with Llama Stack apps on pre-hosted Llama Stack endpoint.
-
-
-### Local meta-reference Llama Stack Server
-* Developer Need: I want to start a local Llama Stack server with my GPU using meta-reference implementations.
-* Effort: 5min
-* Guide:
-  - Please see our [meta-reference-gpu](https://llama-stack.readthedocs.io/en/latest/distributions/self_hosted_distro/meta-reference-gpu.html) on starting up a meta-reference Llama Stack server.
-
-### Llama Stack Server with Remote Providers
-* Developer need: I want a Llama Stack distribution with a remote provider.
-* Effort: 10min
-* Guide
-  - Please see our [Distributions Guide](https://llama-stack.readthedocs.io/en/latest/concepts/index.html#distributions) on starting up distributions with remote providers.
-
-
-### On-Device (iOS) Llama Stack
-* Developer Need: I want to use Llama Stack on-Device
-* Effort: 1.5hr
-* Guide:
-  - Please see our [iOS Llama Stack SDK](./ios_sdk.md) implementations
-
-### Assemble your own Llama Stack Distribution
-* Developer Need: I want to assemble my own distribution with API providers to my likings
-* Effort: 30min
-* Guide
-  - Please see our [Building Distribution](./building_distro.md) guide for assembling your own Llama Stack distribution with your choice of API providers.
-
-### Adding a New API Provider
-* Developer Need: I want to add a new API provider to Llama Stack.
-* Effort: 3hr
-* Guide
-  - Please see our [Adding a New API Provider](https://llama-stack.readthedocs.io/en/latest/contributing/new_api_provider.html) guide for adding a new API provider.