Mistral Large (24.07) and Codestral (24.05) that are offered as a Model as a Service (MaaS) models in Model Garden are deprecated

## Deprecate Mistral Large (24.07) and Codestral (24.05) that are offered as a Model as a Service (MaaS) models in Model Garden are deprecated. For details, see [Generative AI on Vertex AI deprecations](https://cloud.google.com/vertex-ai/generative-ai/docs/deprecations).