Staging: lustre: obdclass: Remove braces for single statement blocks

The linux kernel coding style discourages use of braces for single
statement blocks. This patch removes the unnecessary braces.

The warning was detected using checkpatch.pl. Coccinelle was used to
make the change.

Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>