Clean notebook metadata #8099

Job	Run time
pytest-ubuntu-py310-gcc14-omp-adjoint	33m 15s
pytest-ubuntu-py311-gcc10-noomp-base	44m 19s
pytest-ubuntu-py312-gcc12-cxxomp-adjoint	41m 0s
pytest-docker-py310-gcc-omp-base	40m 39s
pytest-ubuntu-py312-gcc13-omp-base	53m 11s
pytest-ubuntu-py311-gcc10-noomp-adjoint	32m 21s
pytest-ubuntu-py310-gcc14-omp-base	46m 25s
pytest-ubuntu-py311-gcc11-cxxnoomp-adjoint	34m 53s
pytest-ubuntu-py310-gcc9-omp-adjoint	33m 55s
pytest-ubuntu-py312-gcc13-omp-adjoint	37m 34s
pytest-docker-py310-icx-omp-adjoint	29m 59s
pytest-ubuntu-py310-gcc9-omp-base	46m 50s
pytest-ubuntu-py312-gcc12-cxxomp-base	59m 8s
pytest-osx-py312-clang-omp-base	29m 42s
pytest-docker-py310-icx-omp-base	33m 28s
pytest-docker-py310-gcc-omp-adjoint	30m 39s
pytest-ubuntu-py311-gcc11-cxxnoomp-base	47m 44s
	11h 15m 2s

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