Update Machine support of python 3.9 / Kernel CEC (#51637)

machine/odroid-n2

@@ -3,32 +3,3 @@ FROM homeassistant/aarch64-homeassistant:$BUILD_VERSION
 
 RUN apk --no-cache add \
     usbutils
-
-##
-# Build libcec for HDMI-CEC
-ARG LIBCEC_VERSION=6.0.2
-RUN apk add --no-cache \
-        eudev-libs \
-        p8-platform \
-    && apk add --no-cache --virtual .build-dependencies \
-        build-base \
-        cmake \
-        eudev-dev \
-        swig \
-        p8-platform-dev \
-        linux-headers \
-    && git clone --depth 1 -b libcec-${LIBCEC_VERSION} https://github.com/Pulse-Eight/libcec /usr/src/libcec \
-    && cd /usr/src/libcec \
-    && mkdir -p /usr/src/libcec/build \
-    && cd /usr/src/libcec/build \
-    && cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr/local \
-        -DPYTHON_LIBRARY="/usr/local/lib/libpython3.8.so" \
-        -DPYTHON_INCLUDE_DIR="/usr/local/include/python3.8" \
-        -DHAVE_LINUX_API=1 \
-        -DHAVE_AOCEC_API=1 \
-        .. \
-    && make -j$(nproc) \
-    && make install \
-    && echo "cec" > "/usr/local/lib/python3.8/site-packages/cec.pth" \
-    && apk del .build-dependencies \
-    && rm -rf /usr/src/libcec*