doc: Remove outdated ClearLinux Docker file

Signed-off-by: Reyes, Amy <amy.reyes@intel.com>

doc/getting-started/Dockerfile

@@ -1,43 +0,0 @@
-# Build container based on Clearlinux
-FROM clearlinux:base
-
-# Tools (bundles) to build the ACRN hypervisor, Device Model, tools and doc
-# - bundles needed to build kernels: bc, lz4, diffutils and devpkg-elfutils, devpkg-ncurses
-# - bundles needed to build the documentation: doxygen, graphviz, desktop-apps
-RUN swupd update -b && \
-	swupd bundle-add -b c-basic \
-			python3-basic \
-			which \
-			git \
-			devpkg-systemd \
-			devpkg-telemetrics-client \
-			devpkg-e2fsprogs \
-			devpkg-libxml2 \
-			devpkg-openssl \
-			devpkg-util-linux \
-			devpkg-libevent \
-			devpkg-libusb \
-			devpkg-libpciaccess \
-			devpkg-gnu-efi \
-			devpkg-numactl \
-			bc \
-			lz4 \
-			diffutils \
-			devpkg-elfutils \
-			doxygen \
-			rsync \
-			devpkg-ncurses \
-			devpkg-graphviz \
-			desktop-apps \
-	&& rm -rf /var/lib/swupd/*
-
-RUN pip3 install kconfiglib
-# End of section installing build tools (bundles)
-
-# Additional tools (Python) to build the documentation
-RUN curl -O https://raw.githubusercontent.com/projectacrn/acrn-hypervisor/master/doc/scripts/requirements.txt && \
-	pip3 install -r requirements.txt && \
-	rm requirements.txt
-# End of documentation generation tools
-
-WORKDIR /workspace