Revert "Amend HBASE-12457 Regions in transition for a long time when CLOSE interleaves with a slow compaction; Test import fix"

This reverts commit 9d2ad55cfa6108718d785b5e71ab10e9fb75a988.
Revert "HBASE-12457 Regions in transition for a long time when CLOSE interleaves with a slow compaction."

This reverts commit 0e795c1cf8621df2d33600f4b33a00344fe5de5a.