Fly.io example: remove step to cache silero models.

No longer necessary.

examples/deployment/flyio-example/Dockerfile

@@ -9,8 +9,5 @@ COPY *.py .
 COPY ./requirements.txt requirements.txt
 RUN pip3 install --no-cache-dir --upgrade -r requirements.txt
 
-# Install models
-RUN python3 install_deps.py
-
 # Start the FastAPI server
 CMD python3 bot_runner.py --port ${FAST_API_PORT}