Remove pip packages again

Dockerfile

@@ -109,9 +109,6 @@ RUN echo 'hosts: files dns' > /etc/nsswitch.conf && \
     \
     composer selfupdate && \
     \
-    python -m pip install --upgrade pip && \
-    pip install --upgrade python-gitlab pyyaml && \
-    \
     ln -s /usr/local/bin/ahoy /usr/local/bin/a && \
     ln -s /usr/local/bin/composer /usr/local/bin/c && \
     ln -s /usr/local/bin/docker-compose /usr/local/bin/d-c && \