chore(Dockerfile): remove creation of telemetry_user_id file (chromadb)

This is most likely no-op.

The path is referenced in a telemetry module [1], however,
telemetry is disabled altogether in chroma.py according to [2].

[1]: https://github.com/chroma-core/chroma/blob/0.6.3/chromadb/telemetry/product/__init__.py
[2]: https://docs.trychroma.com/docs/overview/telemetry#in-client-code

Refs: PRODAI-418

Author: thlehmann-ionos

Dockerfile

@@ -52,9 +52,6 @@ WORKDIR /app/backend
 
 ENV HOME=/root
 
-RUN mkdir -p $HOME/.cache/chroma
-RUN echo -n 00000000-0000-0000-0000-000000000000 > $HOME/.cache/chroma/telemetry_user_id
-
 RUN apt-get update && \
     # Install pandoc, netcat and gcc
     apt-get install -y --no-install-recommends git build-essential pandoc gcc netcat-openbsd curl jq && \