rm gromacs-2021 patch #2927

Job	Run time
codecheck / codecheck	44m 2s
conda / conda (ubuntu-20.04)	10m 25s
conda / conda (macos-12)	15m 56s
conda / conda (macos-14)	7m 51s
docker / docker (fedora39)	20m 28s
linux / linux (-doc-mpi-)	39m 49s
docker / docker (rocky8)	23m 26s
linux / linux (-mpi-)	50m 26s
mac / macports (macos-12)	11m 36s
linux / linux (-coverage-mpi-)	1h 3m 27s
mac / macports (macos-14)	7m 19s
linux / linux (-debug-)	31m 2s
mac / macports (+allmodules, macos-12)	17m 56s
mac / macsimple (macos-12)	8m 1s
linux / linux (-debug-mpi-)	40m 32s
mac / macsimple (macos-14)	4m 37s
linux / linux (-intel-)	45m 8s
linux / linux (-pycv-mpi-)	16m 36s
	7h 38m 37s

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