remove conda llama package ref

[jperez999]

Description

removes the llama-index-embeddings-nvidia package from the conda env file.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.
• If adjusting docker-compose.yaml environment variables have you ensured those are mimicked in the Helm values.yaml file.