3C509: Remove unnecessary include of <linux/pm_legacy.h>

Remove the apparently redundant include of <linux/pm_legacy.h>.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>