feat: remove ipmiconfig

source/_ext/ipmi.py

source/conf.py

source/config/ipmi.toml

source/pages/machines/base/azzanadra.md

source/pages/machines/base/c3sldb2.md

source/pages/machines/base/duvel.md

source/pages/machines/base/forsyn.md

source/pages/machines/base/urquell.md

source/pages/machines/cluster/c3hpc.md

source/pages/machines/cluster/node2.md

source/pages/machines/cluster/node3.md

source/pages/machines/cluster/node4.md

source/pages/machines/cluster/node5.md

source/pages/machines/cluster/node6.md

source/pages/machines/cluster/node7.md

source/pages/machines/cluster/proc1.md

source/pages/machines/cluster/proc2.md

source/pages/machines/cluster/pti.md

source/pages/machines/cluster/vti1.md

source/pages/machines/cluster/vti2.md