feat: remove supports for huggingface

[sigoden]

The models listed on Hugging Face are incomplete and unstable. Please add models manually.

  # See https://huggingface.co/inference-api/serverless
  - type: openai-compatible
    name: huggingface
    api_base: https://api-inference.huggingface.co/v1
    api_key: hf_xxx
    models:
    - name: NousResearch/Hermes-3-Llama-3.1-8B
      max_input_tokens: 8192
      max_output_tokens: 4096
      require_max_tokens: true
      input_price: 0
      output_price: 0
    - name: mistralai/Mistral-Small-Instruct-2409
      max_input_tokens: 128000
      max_output_tokens: 4096
      require_max_tokens: true
      input_price: 0
      output_price: 0
    - name: mistralai/Mistral-Nemo-Instruct-2407
      max_input_tokens: 128000
      max_output_tokens: 4096
      require_max_tokens: true
      input_price: 0
      output_price: 0