Fix the python-olm hacks.

Dockerfile

@@ -11,16 +11,6 @@ RUN apk add --no-cache \
     yaml-dev \
     python3-dev
 
-RUN  set -ex; \
-    git clone -b "${LIBOLM_VERSION}" https://gitlab.matrix.org/matrix-org/olm.git olm && cd olm; \
-    pip install setuptools==68.2.2; \
-    cmake . -Bbuild ; \
-    cmake --build build ; \
-    make install ; \
-    cd python && make olm-python3 ; \
-    mkdir -p "/python-libs" || true ; \
-    DESTDIR="/python-libs" make install-python3
-
 RUN mkdir -p /app/ops_bot
 COPY requirements.frozen.txt /app/requirements.txt
 RUN pip install --prefix="/python-libs" -r /app/requirements.txt