selftests/thermal: remove duplicate sprintf() call in workload_hint_test

Remove redundant sprintf() call that was duplicating the same operation of
formatting delay_str with argv[1].

Link: https://lkml.kernel.org/r/6338CD0E839B770B+20250710130412.284531-1-wangyuli@uniontech.com
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Cc: Guan Wentao <guanwentao@uniontech.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Author: WangYuli

tools/testing/selftests/thermal/intel/workload_hint/workload_hint_test.c

@@ -67,8 +67,6 @@ int main(int argc, char **argv)
 		if (delay < 0)
 			exit(1);
 
-		sprintf(delay_str, "%s\n", argv[1]);
-
 		sprintf(delay_str, "%s\n", argv[1]);
 		fd = open(WORKLOAD_NOTIFICATION_DELAY_ATTRIBUTE, O_RDWR);
 		if (fd < 0) {