[CI][HIP] Install libstdc++-12-dev without gcc12. (#13752)

This partially reverts the changes made in
#13619 to use libstdc++-12-dev without
gcc12.
This also seems to work fine to build dpc++ within the docker. But
should come without the CI failures that might have been induced by the
gcc uplift:
- #13736
- #13735
If the above issues were not caused by the gcc version uplift, then this
patch should also reveal that.

Signed-off-by: JackAKirk <jack.kirk@codeplay.com>

devops/containers/ubuntu2204_build.Dockerfile

@@ -13,9 +13,7 @@ COPY scripts/install_build_tools.sh /install.sh
 RUN /install.sh
 
 RUN apt install -yqq libnuma-dev wget gnupg2 && \
-  apt-get install -yqq gcc-12 g++-12 libstdc++-12-dev && \
-  update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 100 && \
-  update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 100
+  apt-get install -yqq libstdc++-12-dev
 
 RUN wget https://repo.radeon.com/amdgpu-install/6.1/ubuntu/jammy/amdgpu-install_6.1.60100-1_all.deb && \
   apt install -yqq ./amdgpu-install_6.1.60100-1_all.deb && \