gfs2_tool manpage: gfs2_tool counters doesn't exist anymore.
gfs2_tool manpage: gfs2_tool counters doesn't exist anymore.

This patch reflects the removal of the 'counters' command from gfs2_tool. bz 438759

asp24/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents