Remove redundant models.provider from team.yaml. Each adapter knows its
own provider key — AnthropicAdapter always looks up 'anthropic' in the
capability_map. This avoids a footgun where adapters.llm and models.provider
could disagree.
Future adapters (OpenAIAdapter, OllamaAdapter) will hardcode their own key
the same way.
Hans Heinemann
bd96a83069