6781 zpool man page needs updated to remove duplicate entry of "cannot be" where it discusses cache devices
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

@@ -97,12 +97,12 @@
              devices can be mirrored. However, raidz vdev types are not
              supported for the intent log. For more information, see the
              Intent Log section.
 
      cache   A device used to cache storage pool data. A cache device cannot
-             be cannot be configured as a mirror or raidz group. For more
-             information, see the Cache Devices section.
+             be configured as a mirror or raidz group. For more information,
+             see the Cache Devices section.
 
      Virtual devices cannot be nested, so a mirror or raidz virtual device can
      only contain files or disks. Mirrors of mirrors (or other combinations)
      are not allowed.
 

@@ -1130,6 +1130,6 @@
      Evolving
 
 SEE ALSO
      zfs(1M), attributes(5), zpool-features(5)
 
-illumos                        February 15, 2016                       illumos
+illumos                         March 25, 2016                         illumos