Revert following commits:

Revert "mm: compaction: introduce isolate_freepages_range()"

This reverts commit 43bc9b4c5773222847f7491ff650d1239ce77625.

Revert "mm: compaction: introduce map_pages()"

This reverts commit 0d6c68fd16ad460c8a9661a3c416f03f0d1068cc.

Revert "mm: compaction: introduce isolate_migratepages_range()"

This reverts commit 0c312cd2bdba14dd72c5f730bd1b4ab42f4262e8.