Fix weekly tests

Fix c2f test times of long running weekly tests. Remove tests for old obsolete mcbm setups.

PAL edit: Refs #2382 resolved without fix by the mcbm change

changed milestone to %FEB23

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requested review from @p.-a.loizeau

assigned to @p.-a.loizeau

Dear @i.selyuzhenkov, @f.uhlig, @p.-a.loizeau,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

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merged