remove from docker image useless clang and flang 15 (not fully functional in trixie)

containers/docker/Dockerfile

@@ -12,7 +12,7 @@ WORKDIR /root
 RUN apt update
 RUN DEBIAN_FRONTEND=noninteractive apt -y upgrade
 # install packages needed to build binaries
-RUN DEBIAN_FRONTEND=noninteractive apt -y install g++ gfortran gcc-offload-nvptx g++-11 gfortran-11 gcc-11-offload-nvptx g++-12 gfortran-12 gcc-12-offload-nvptx g++-13 gfortran-13 gcc-13-offload-nvptx g++-14 gfortran-14 gcc-14-offload-nvptx clang libc++-dev libc++abi-dev clang-15 clang-16 clang-17 flang-15 flang-16 flang-17 libhdf5-dev make
+RUN DEBIAN_FRONTEND=noninteractive apt -y install g++ gfortran gcc-offload-nvptx g++-11 gfortran-11 gcc-11-offload-nvptx g++-12 gfortran-12 gcc-12-offload-nvptx g++-13 gfortran-13 gcc-13-offload-nvptx g++-14 gfortran-14 gcc-14-offload-nvptx clang libc++-dev libc++abi-dev clang-16 clang-17 flang-16 flang-17 libhdf5-dev make
 # install packages needed to test with Intel OneAPI compilers
 COPY --chown=root:root containers/docker/dockerstuff/intelcomps/oneapi-archive-keyring.gpg /usr/share/keyrings/
 COPY --chown=root:root containers/docker/dockerstuff/intelcomps/oneAPI.list /etc/apt/sources.list.d/