treewide: remove duplicate includes

Many stupid corrections of duplicated includes based on the output of
scripts/checkincludes.pl.

Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/net/can/c_can/c_can.c

@@ -34,7 +34,6 @@
 #include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/list.h>
-#include <linux/delay.h>
 #include <linux/io.h>
 
 #include <linux/can.h>

drivers/net/can/c_can/c_can_platform.c

@@ -28,7 +28,6 @@
 #include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/list.h>
-#include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>