Revert "fedora: add v2019.6 container" #597

Job	Run time
CI (fedora, gmxpkg)	24m 40s
CI (fedora, rawhide, TAG=rawhide,PYTHON=python3.12, true)	5m 24s
CI (ubuntu, latest)	2m 0s
CI (ubuntu, intel, TAG=22.04,INTEL=yes, true)	4m 22s
CI (ubuntu, rolling, TAG=rolling)	2m 32s
CI (ubuntu, devel, TAG=devel, true)	2m 46s
CI (opensuse, latest, true)	2m 22s
CI (fedora, latest, GMX_BRANCH=release-2019,GMX_DOUBLE=ON)	27m 34s
CI (fedora, gmx2019, GMX_BRANCH=release-2019)	27m 49s
CI (fedora, gmx2024_d, GMX_BRANCH=release-2024,GMX_DOUBLE=ON)	33m 27s
CI (fedora, gmx2024, GMX_BRANCH=release-2024)	33m 35s
CI (fedora, gmx9999_d, GMX_BRANCH=main,GMX_DOUBLE=ON, true)	31m 26s
CI (fedora, gmx9999, GMX_BRANCH=main, true)	32m 55s
CI (fedora, nogmx, GMX_BRANCH=none)	23m 30s
CI (fedora, intel, TAG=38,INTEL=yes,PYTHON=python3.11, true)	29m 41s
CI (actions, latest)	52s
CI (format, latest)	1m 3s
	4h 45m 58s

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