ARC: Remove duplicate inclusion of header files

Some header files were included twice in the same file.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

arch/arc/kernel/kprobes.c

@@ -10,7 +10,6 @@
 #include <linux/kprobes.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <linux/kprobes.h>
 #include <linux/kdebug.h>
 #include <linux/sched.h>
 #include <linux/uaccess.h>

arch/arc/kernel/setup.c

@@ -21,7 +21,6 @@
 #include <asm/setup.h>
 #include <asm/page.h>
 #include <asm/irq.h>
-#include <asm/arcregs.h>
 #include <asm/prom.h>
 #include <asm/unwind.h>
 #include <asm/clk.h>

arch/arc/kernel/time.c

@@ -33,7 +33,6 @@
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/kernel.h>
-#include <linux/interrupt.h>
 #include <linux/time.h>
 #include <linux/init.h>
 #include <linux/timex.h>