cleanup old and not needed repair steps to speed up the update

lib/composer/composer/autoload_classmap.php

lib/composer/composer/autoload_static.php

lib/private/Repair.php

lib/private/Repair/AssetCache.php

lib/private/Repair/DropOldJobs.php

lib/private/Repair/DropOldTables.php

lib/private/Repair/FillETags.php

lib/private/Repair/InnoDB.php

lib/private/Repair/Preview.php

lib/private/Repair/RemoveGetETagEntries.php

lib/private/Repair/RemoveOldShares.php

lib/private/Repair/RepairInvalidShares.php

lib/private/Repair/RepairMimeTypes.php

lib/private/Repair/RepairUnmergedShares.php

lib/private/Repair/SearchLuceneTables.php

lib/private/Repair/SharePropagation.php

lib/private/Repair/UpdateOutdatedOcsIds.php

tests/lib/Repair/DropOldJobsTest.php

tests/lib/Repair/DropOldTablesTest.php

tests/lib/Repair/RemoveGetETagEntriesTest.php