Do not install unmaintained plugins

Dockerfile

@@ -13,7 +13,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends build-essential
 COPY requirements.txt .
 RUN pip install --upgrade pip && \
     pip install -r requirements.txt && \
-    pip install kinto-attachment kinto-emailer kinto-elasticsearch kinto-portier kinto-redis httpie
+    pip install kinto-attachment kinto-emailer httpie
 
 FROM python:3.10-slim-bullseye
 RUN apt-get update && apt-get install -y --no-install-recommends libpq-dev