drivers: staging: remove duplicate includes

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.
Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ccree/ssi_buffer_mgr.c

@@ -23,7 +23,6 @@
 #include <crypto/scatterwalk.h>
 #include <linux/dmapool.h>
 #include <linux/dma-mapping.h>
-#include <linux/crypto.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 

drivers/staging/ccree/ssi_driver.c

@@ -55,7 +55,6 @@
 #include <linux/uaccess.h>
 #include <linux/pagemap.h>
 #include <linux/sched.h>
-#include <linux/random.h>
 #include <linux/of.h>
 #include <linux/clk.h>
 #include <linux/of_address.h>

drivers/staging/irda/drivers/pxaficp_ir.c

@@ -12,7 +12,6 @@
  * Infra-red driver (SIR/FIR) for the PXA2xx embedded microprocessor
  *
  */
-#include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>