IB/mthca: Remove unnecessary include of <linux/init.h>

mthca_reset.c doesn't have any function annotations, so there's no
reason to include <linux/init.h>.
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/mthca/mthca_reset.c

@@ -30,7 +30,6 @@
  * SOFTWARE.
  */
 
-#include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/pci.h>
 #include <linux/delay.h>