HBASE-24763 Remove 2.1 Documentation direct link from website (#2129)
HBASE-24763 Remove 2.1 Documentation direct link from website (#2129)

2.1 is EOM so the 2.1 Documentation link can be removed.
The content is still available under https://hbase.apache.org/2.1

Signed-off-by: Jan Hentschel <d578fdd300b8c938efb2f672d6088098989ff57c@ultratendency.com>
mahak/hbase,Apache9/hbase,Apache9/hbase,mahak/hbase,Apache9/hbase,ndimiduk/hbase,Apache9/hbase,mahak/hbase,apurtell/hbase,apurtell/hbase,Apache9/hbase,apurtell/hbase,ndimiduk/hbase,apurtell/hbase,mahak/hbase,apurtell/hbase,mahak/hbase,ndimiduk/hbase,ndimiduk/hbase,ndimiduk/hbase,ndimiduk/hbase,Apache9/hbase,ndimiduk/hbase,ndimiduk/hbase,ndimiduk/hbase,Apache9/hbase,mahak/hbase,apurtell/hbase,Apache9/hbase,mahak/hbase,apurtell/hbase,Apache9/hbase,apurtell/hbase,apurtell/hbase,mahak/hbase,Apache9/hbase,mahak/hbase,mahak/hbase,ndimiduk/hbase,apurtell/hbase