Revert "DB-2244 Two phase split policy with condition"

This reverts commit a0e89023b2c2bf52edb4729e868308aa7245724e.
Revert "DB-2180 removed old version"

This reverts commit 14d6ba86ab9cde804c09ef06015500a164a61077.
Revert "DB-2180 renamed main class"

This reverts commit 6dfb75f9f1c8b5fb7980ac2e0ffd0a204f1a0541.
Revert "DB-2180: DoublePhaseRegionSplitPolicy"

This reverts commit 5befe4d4f692795a656ced284b37be4d1e458884.
Revert "HBase-10501 patch: improve IncreasingToUpperBoundRegionSplitPolicy"

This reverts commit fed0e54e3182350828d62e8bec898581c2eae170.
Revert "DB-2175 patch"

This reverts commit b67c941a002486d35b6628ef433ecd13f7be7d9a.