mm/process_vm_access.c: remove duplicate include

'linux/compat.h' included in 'process_vm_access.c' is duplicated.

Link: https://lkml.kernel.org/r/20210306132122.220431-1-zhang.yunkai@zte.com.cn
Signed-off-by: Zhang Yunkai <zhang.yunkai@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/process_vm_access.c

@@ -9,7 +9,6 @@
 #include <linux/mm.h>
 #include <linux/uio.h>
 #include <linux/sched.h>
-#include <linux/compat.h>
 #include <linux/sched/mm.h>
 #include <linux/highmem.h>
 #include <linux/ptrace.h>