Revert "HBASE-13948 Expand hadoop2 versions built on the pre-commit"
Revert "HBASE-13948 Expand hadoop2 versions built on the pre-commit"

This reverts commit 9db3ea3406748799b7fc36f9d88aac04e02d8fc4.

bijugs/hbase,ultratendency/hbase,JingchengDu/hbase,Apache9/hbase,JingchengDu/hbase,bijugs/hbase,Apache9/hbase,Eshcar/hbase,vincentpoon/hbase,JingchengDu/hbase,ChinmaySKulkarni/hbase,mahak/hbase,JingchengDu/hbase,ChinmaySKulkarni/hbase,ndimiduk/hbase,HubSpot/hbase,Eshcar/hbase,HubSpot/hbase,francisliu/hbase,ndimiduk/hbase,Eshcar/hbase,HubSpot/hbase,juwi/hbase,apurtell/hbase,apurtell/hbase,HubSpot/hbase,HubSpot/hbase,mahak/hbase,ultratendency/hbase,mahak/hbase,ndimiduk/hbase,juwi/hbase,Apache9/hbase,ChinmaySKulkarni/hbase,ndimiduk/hbase,ultratendency/hbase,francisliu/hbase,bijugs/hbase,francisliu/hbase,JingchengDu/hbase,lshmouse/hbase,gustavoanatoly/hbase,gustavoanatoly/hbase,Apache9/hbase,ultratendency/hbase,vincentpoon/hbase,Apache9/hbase,juwi/hbase,mahak/hbase,ChinmaySKulkarni/hbase,bijugs/hbase,Eshcar/hbase,apurtell/hbase,ultratendency/hbase,Eshcar/hbase,mahak/hbase,bijugs/hbase,ChinmaySKulkarni/hbase,lshmouse/hbase,Apache9/hbase,gustavoanatoly/hbase,apurtell/hbase,ultratendency/hbase,juwi/hbase,lshmouse/hbase,ultratendency/hbase,francisliu/hbase,francisliu/hbase,mahak/hbase,vincentpoon/hbase,vincentpoon/hbase,bijugs/hbase,apurtell/hbase,JingchengDu/hbase,JingchengDu/hbase,ChinmaySKulkarni/hbase,bijugs/hbase,apurtell/hbase,juwi/hbase,ndimiduk/hbase,bijugs/hbase,francisliu/hbase,ultratendency/hbase,juwi/hbase,vincentpoon/hbase,Eshcar/hbase,francisliu/hbase,apurtell/hbase,JingchengDu/hbase,gustavoanatoly/hbase,HubSpot/hbase,lshmouse/hbase,Eshcar/hbase,mahak/hbase,apurtell/hbase,gustavoanatoly/hbase,HubSpot/hbase,vincentpoon/hbase,vincentpoon/hbase,mahak/hbase,Eshcar/hbase,HubSpot/hbase,gustavoanatoly/hbase,Apache9/hbase,Apache9/hbase,HubSpot/hbase,ChinmaySKulkarni/hbase,lshmouse/hbase,ndimiduk/hbase,JingchengDu/hbase,ChinmaySKulkarni/hbase,lshmouse/hbase,lshmouse/hbase,francisliu/hbase,juwi/hbase,ChinmaySKulkarni/hbase,bijugs/hbase,vincentpoon/hbase,gustavoanatoly/hbase,ndimiduk/hbase,lshmouse/hbase,mahak/hbase,ultratendency/hbase,juwi/hbase,vincentpoon/hbase,gustavoanatoly/hbase,gustavoanatoly/hbase,ChinmaySKulkarni/hbase,Eshcar/hbase,francisliu/hbase,vincentpoon/hbase,lshmouse/hbase,gustavoanatoly/hbase,Apache9/hbase,bijugs/hbase,JingchengDu/hbase,ndimiduk/hbase,mahak/hbase,Eshcar/hbase,apurtell/hbase,apurtell/hbase,ultratendency/hbase,ndimiduk/hbase,lshmouse/hbase,Apache9/hbase,francisliu/hbase,ndimiduk/hbase,juwi/hbase,HubSpot/hbase