selftest/rseq: Remove duplicate header

Remove duplicate header which is included twice
Signed-off-by: NSabyasachi Gupta <sabyasachi.linux@gmail.com>
Signed-off-by: NSouptick Joarder <jrdr.linux@gmail.com>
Acked-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: NShuah Khan <shuah@kernel.org>

tools/testing/selftests/rseq/rseq.h

@@ -16,7 +16,6 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <sched.h>
 #include <linux/rseq.h>
 
 /*