staging/lustre: Remove useless num_refs procfs variable
authorOleg Drokin <green@linuxhacker.ru>
Thu, 21 May 2015 19:32:13 +0000 (15:32 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 31 May 2015 02:16:54 +0000 (11:16 +0900)
Every obd type registers it, but it's not really needed by anybody.
Remove all the supporting infrastructure too.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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