tools/sched_ext: scx_sdt: Remove unused '-f' option

The '-f' option is defined in getopt() but not handled in the switch
statement or documented in the help text. Providing '-f' currently
triggers the default error path.

Remove it to sync the optstring with the actual implementation.

Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Author: EricccTaiwan

tools/sched_ext/scx_sdt.c

@@ -54,7 +54,7 @@ int main(int argc, char **argv)
 	optind = 1;
 	skel = SCX_OPS_OPEN(sdt_ops, scx_sdt);
 
-	while ((opt = getopt(argc, argv, "fvh")) != -1) {
+	while ((opt = getopt(argc, argv, "vh")) != -1) {
 		switch (opt) {
 		case 'v':
 			verbose = true;