Deleted singularity/TP4_mpi/runmpi.slurm

Deleted singularity/TP4_mpi/runme.slurm

Update singularity/TP4_mpi/.gitkeep, singularity/TP4_mpi/.gitlab-ci.yml, singularity/TP4_mpi/README.md, singularity/TP4_mpi/mpitest.c, singularity/TP4_mpi/openmpi.def, singularity/TP4_mpi/run_git.sh, singularity/Singularity_TP4_mpi.adoc, singularity/Singularity_TP1_installation.adoc, singularity/Singularity_TP2_first_container.adoc files