Remove more dependencies.

Dockerfile

@@ -11,14 +11,11 @@ RUN apt-get update && apt-get install --no-install-recommends -y -q \
     curl \
     gcc \
     git \
-    libcairo2-dev \
     libev-dev \
     jq \
     python3 \
     python3-dev \
     python3-pip \
-    python3-pyqt5 \
-    python3-pyqt5.sip && \
     curl -sSL https://install.python-poetry.org | python3 - --version "$(jq -r .constraints.poetry /root/renovate.json)" && \
     poetry config virtualenvs.create false && \
     python3 -m pip install --no-cache-dir --upgrade pip
@@ -34,8 +31,7 @@ COPY poetry.lock pyproject.toml README.md /gamutrf/
 # dependency install is cached for faster rebuild, if only gamutrf source changed.
 RUN if [ "${POETRY_CACHE}" != "" ] ; then echo using cache "${POETRY_CACHE}" ; poetry source add --priority=default local "${POETRY_CACHE}" ; fi
 # TODO: handle caching
-RUN for i in bjoern falcon-cors gpsd-py3 RPi.GPIO pycairo ; do poetry run pip install --no-cache-dir "$i"=="$(grep $i pyproject.toml | grep -Eo '\"[0-9\.]+' | sed 's/\"//g')" || exit 1 ; done
-RUN if [ "$(arch)" == "aarch64" ] ; then poetry run pip install --no-cache-dir RPi.GPIO=="$(grep RPi.GPIO pyproject.toml | grep -Eo '\"[0-9\.]+' | sed 's/\"//g')" ; fi
+RUN for i in bjoern falcon-cors gpsd-py3 ; do poetry run pip install --no-cache-dir "$i"=="$(grep $i pyproject.toml | grep -Eo '\"[0-9\.]+' | sed 's/\"//g')" || exit 1 ; done
 RUN poetry install --no-interaction --no-ansi --no-dev --no-root
 COPY gamutrf gamutrf/
 COPY bin bin/
@@ -61,7 +57,6 @@ RUN if [ "$(arch)" = "x86_64" ] ; then /root/install-nv.sh ; fi && \
         libboost-iostreams1.74.0 \
         libboost-program-options1.74.0 \
         libboost-thread1.74.0 \
-        libcairo2 \
         libev4 \
         libfftw3-3 \
         libgl1 \
@@ -70,8 +65,6 @@ RUN if [ "$(arch)" = "x86_64" ] ; then /root/install-nv.sh ; fi && \
         libopencv-core4.5d \
         libopencv-imgcodecs4.5d \
         libopencv-imgproc4.5d \
-        python3-pyqt5 \
-        python3-pyqt5.sip \
         librtlsdr0 \
         libspdlog1 \
         libuhd4.1.0 \