SPARC: backoff.h: delete a duplicated word

Drop the repeated word "other".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/include/asm/backoff.h

@@ -18,7 +18,7 @@
  *
  * When we spin, we try to use an operation that will cause the
  * current cpu strand to block, and therefore make the core fully
- * available to any other other runnable strands.  There are two
+ * available to any other runnable strands.  There are two
  * options, based upon cpu capabilities.
  *
  * On all cpus prior to SPARC-T4 we do three dummy reads of the