Remove DEEPGRAM_API_KEY from desktop .env.example

No longer needed — STT now routes through backend /v4/listen.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: beastoin

desktop/.env.example

@@ -17,9 +17,6 @@
 # Production: https://api.omi.me
 OMI_API_URL=http://localhost:8080
 
-# DeepGram API key — required for real-time transcription
-DEEPGRAM_API_KEY=
-
 # ─── AI (optional) ──────────────────────────────────────────────────
 # Gemini API key for proactive assistants and embeddings
 # Falls back to backend-side processing if not set