Revert "HADOOP-14557. Document HADOOP-8143 (Change distcp to have -pb on by default)."

This reverts commit 44350fdf495f5cf1bb15b1fe6f6e9587d3de0a59.

It is related to the rollback of HADOOP-8143.

Change-Id: If48e3dd670c920ada702dc36461ff398fe9d35cc
1 file changed